Green Seal 2022 — GS-52 Edition 2.6 Standard for Specialty Cleaning Products for Household Use

The binding text of Green Seal’s voluntary environmental certification standard for specialty cleaning products intended for household use. Edition 2.6 was issued November 11, 2021, replacing Edition 2.5 from April 8, 2020; the version retrieved (©2021 Green Seal, Inc., file Green_Seal_GS-52_Specialty_Household_Cleaners_2022.pdf) carries corrections and clarifications last made on January 28, 2022 per the Foreword (p. 5). The standard is 41 pages organised into 7 main clauses (Scope; Product-Specific Performance Requirements; Product-Specific Sustainability Requirements; Manufacturing Sustainability Requirements; Packaging Sustainability Requirements; User Information and Product Label Requirements; Trademark Use Requirements) and 4 normative annexes (Definitions; Powders/Solids/Non-Aqueous Liquids; Enzymes; Microorganisms) plus two informative appendices (Appendix 1 Scope; Appendix 2 Naturally Derived Components).

Heavy-metal coverage in Edition 2.6 operates through three distinct mechanisms across the Product-Specific Sustainability and Packaging Sustainability clauses. First, the Colorants criterion (section 3.21) requires each colorant to be FDA-certified for ingestion, a natural colorant, or to not have any of nine named heavy metals intentionally added: arsenic, cadmium, cobalt, hexavalent chromium, lead, manganese, mercury, nickel, and selenium. Second, the Prohibited Components criterion (section 3.18) prohibits in the undiluted product the heavy metals lead, hexavalent chromium, or selenium; either in the elemental form or compounds, alongside 2-butoxyethanol, alkylphenol ethoxylates, halogenated organic solvents, nitro-musks, o-phenylphenol, ozone-depleting compounds, phthalates, polycyclic musks, Toxic Release Inventory Persistent, Bioaccumulative, and Toxic (TRI PBT) chemicals, and triclosan, with a footnote (p. 18) citing endocrine disruption, neurotoxicity, and systemic toxicity as the basis. Third, the Packaging Sustainability > Heavy Metal Restrictions sub-clause (section 5.5) sets a sum-of-concentrations numerical ceiling on lead, mercury, cadmium, and hexavalent chromium in primary packaging: these four metals shall not be intentionally introduced and their sum shall not exceed 100 parts per million by weight, with an exception for refillable packages or packages that would not exceed but for the addition of post-consumer material. A parallel Other Restrictions sub-clause (section 5.6) prohibits intentional introduction of phthalates, bisphenol A, and chlorinated packaging material to a plastic primary package, with the same post-consumer-material exception.

GS-52 covers specialty household cleaners that fall outside the routine general-purpose / floor / restroom / toilet / glass / carpet cleaner scope of the sibling Green Seal Standard GS-8 (Cleaning Products for Household Use) and outside the industrial and institutional scope of the sibling greenseal2024-gs37-industrial-institutional-cleaners. Appendix 1 (pp. 39-40) enumerates in-scope household categories including adhesive remover; boat cleaning (hull, bilge); boat wax/polish/sealant/glaze; chewing gum remover; deck/siding/outdoor furniture cleaning; dish cleaning (automatic, hand, rinse agent); antimicrobial pesticide products (disinfectants, sanitizers); drain additive/cleaning; dusting aid; electronic cleaning; fruit and vegetable wash; furniture polish; graffiti remover; grout cleaning; holding tank treatment; leather cleaning; metal cleaning; mold and mildew stain remover; motor vehicle cleaning, dressing, windshield washing fluid, and wax/polish/sealant/glaze; odor remover; optical lens cleaning; oven cleaning; pressurized gas dusting; recreational vehicle tank treatment; rust stain remover; septic tank treatment; stone cleaning; tire and wheel cleaning; upholstery cleaning; waterless motor vehicle cleaning; and products containing microorganisms or enzymes (in non-spray packaging only). Appendix 1 excluded categories include air fresheners; cleaners/degreasers in production/maintenance applications (GS-34); dry erase board cleaning products (GS-37); industrial and institutional floor finish/strippers (GS-40); general-purpose/restroom/glass/carpet cleaners with or without enzymes/microorganisms for industrial and institutional use (GS-37); the same categories marketed for household use (GS-8); hand cleaning for industrial/institutional (GS-41) and household use (GS-44); hand dish cleaning products formulated with antimicrobial agents to support antimicrobial claims; industrial and institutional versions of any in-scope item; laundry care (covered by GS-48, in development); paint remover/thinner; products containing enzymes sold in spray packaging; pump and sewer treatment; and sterilizers or high-level disinfectants for critical medical devices.

This page documents the binding standard text as the operative GS-52 reference for specialty household cleaning products. The sibling greenseal2024-gs37-industrial-institutional-cleaners is the operative reference for the industrial and institutional general-purpose, restroom, glass, and carpet cleaner scope; the sibling greenseal2009-gs37-version-comparison is the 2006-vs-2008 GS-37 version-comparison artefact. Green Seal Standard GS-8 (Cleaning Products for Household Use), referenced in the GS-52 scope exclusions, is not yet ingested in HMI as a separate source page (a parallel KADC sibling PDF Green_Seal_GS-8_Household_Cleaners_2022.pdf is present in the same folder pending ingest).

Key numbers

Numerical content below is the subset most relevant to HMI synthesis on specialty household cleaning product groups: the three heavy-metal-specific clauses in full, plus the adjacent numerical thresholds (VOC limits, oral/inhalation/dermal LD/LC50, vapor-pressure thresholds, biodegradability percentages, BCF and log K_ow, aquatic LC50, eutrophication phosphorus, combustibility flashpoint, post-consumer-material percentage, dilution-ratio requirement, and the Annex B/C/D thresholds) that contextualise the heavy-metal limits within the standard’s overall quantitative register.

Heavy-metal-specific prohibitions and limits

Non-metal numerical limits (preserved for context)

CARB regulatory VOC limits (Edition 2.6 referenced subset, p. 14-16 table)

The standard reproduces the current California Air Resources Board (CARB) regulatory limits for VOC content as the binding ceiling for product categories regulated by CARB. The full table at pp. 14-16 spans 25 CARB-regulated product-category families (Adhesive Remover; Dual-Purpose Air Freshener/Disinfectant; Automotive Wax/Polish/Sealant/Glaze; Brake Cleaner; Bug and Tar Remover; Carburetor/Fuel-injection Air Intake Cleaner; Upholstery Cleaner; Disinfectant; Dusting Aid; Electrical Cleaner; Electronic Cleaner; Engine Degreaser; Fabric Refresher; Footwear or Leather Care; Furniture polish; Glass cleaners; Graffiti Remover; Metal Polish or Cleanser; Motor Vehicle Wash; Odor Remover/Eliminator; Oven or Grill Cleaner; Sanitizer; Spot Remover; Tire or Wheel Cleaner; Wood Cleaner) that expand to 51 form-specific sub-rows (aerosol vs nonaerosol vs liquid vs solid variants); the rows below reproduce every sub-row as documented in the standard. Per footnote 12 (p. 14), these limits are a reference to the current CARB regulatory limits and will be updated to reflect any future CARB amendments. Where Appendix 1 GS-52 scope does not include a CARB-table category (e.g., glass cleaners, which are GS-8 / GS-37 scope), the row is preserved for completeness because the standard’s text reproduces it without scope filtering.

Three category-specific CARB cross-mappings are noted at p. 14: “CARB VOC requirements for glass cleaners shall apply to optical lens cleaning products”; “CARB VOC requirements for motor vehicle wax, polish, sealant, or glaze products shall apply to motor vehicle dressing products”; “CARB VOC requirements for bug and tar removers shall apply to chewing gum remover products.”

Normative-annex thresholds

Scope and exclusions (Appendix 1)

Heavy-metal-specific summary

The standard captures heavy metals through three distinct regulatory mechanisms.

(1) Colorants exclusion (§ 3.21). Each colorant in a formulated specialty household cleaner shall be FDA-certified for ingestion, a natural colorant, OR not have any of nine heavy metals intentionally added: arsenic, cadmium, cobalt, hexavalent chromium, lead, manganese, mercury, nickel, and selenium. The clause does not specify a numerical concentration ceiling; it is a binary prohibition on intentional addition to colorant components. This is the broadest by-name heavy-metal coverage in Edition 2.6 and is identical in metal-set composition to the parallel Colorants clause in greenseal2024-gs37-industrial-institutional-cleaners § 2.1.4.

(2) Prohibited Components in the formulated product (§ 3.18). The undiluted product shall not contain three named heavy metals — lead, hexavalent chromium, or selenium — in either elemental form or compounds. The same three-metal list appears in the parallel GS-37 § 2.1.13 Prohibited Ingredients clause. The footnote 13 (p. 18) anchors the named-list to demonstrated endocrine disruption, neurotoxicity, and systemic toxicity health concerns, and explicitly notes that other chemicals may have such concerns but are not listed because they may already be prohibited through other criteria in the standard. Beyond heavy metals, the GS-52 § 3.18 list includes seven additional categories not present in GS-37 § 2.1.13: halogenated organic solvents, nitro-musks, o-phenylphenol, ozone-depleting compounds, polycyclic musks, TRI PBT chemicals, and triclosan. (GS-37 Edition 7.8 instead adds PFAS as a separate clause § 2.1.10 that is not present in GS-52.) The clause is a binary prohibition on intentional formulation with no numerical concentration threshold reproduced in the standard text.

(3) Packaging Heavy Metal Restrictions in primary packaging (§ 5.5). Lead, mercury, cadmium, and hexavalent chromium shall not be intentionally introduced to primary packaging. The sum of these four metals’ concentrations in the packaging shall not exceed 100 ppm. An exception applies for refillable packages or packages that would not exceed but for the addition of post-consumer material. The Annex A definition of “Intentionally Introduced” (p. 28) carves out processing aids and intermediates that impart certain chemical/physical changes during manufacturing, provided their residual presence in the primary package is below 100 ppm. The 100 ppm sum ceiling is the standard’s single explicit heavy-metal numerical limit and is identical to the parallel clause in greenseal2024-gs37-industrial-institutional-cleaners § 3.3.1. The 100 ppm sum corresponds to the four-metals sum convention used in the U.S. Coalition of Northeastern Governors (CONEG) Model Toxics in Packaging Legislation (1989), adopted by 19+ US states, and in EU Directive 94/62/EC Article 11; Edition 2.6 does not reference those external regulations by name in the Heavy Metal Restrictions sub-clause, but the structural and numerical parallel is direct.

Heavy-metal coverage outside these three by-name clauses operates through the other criterion families on a compound-by-compound basis: Carcinogens and Reproductive Toxins (§ 3.5) covers heavy-metal compounds with IARC Group 1/2A/2B, NTP Group 1/2, EPA IRIS A/B1/B2/C, OSHA CFR 29 §1910.1003(a)(1), or GHS Cat 1A/1B carcinogen classifications, plus California Proposition 65 reproductive toxin classifications; Mutagens and Neurotoxins/Systemic Toxins (§ 3.6) covers heavy-metal compounds meeting GHS Cat 1/2 germ-cell mutagenicity (H340/H341) or GHS Cat 1/2 target-organ toxicity (H370/H371/H372/H373); Endocrine Disruptors (§ 3.7) covers heavy-metal compounds on the EPA List of Chemicals for Tier 1 Screening shown to disrupt hormones (estrogen/androgen-mediated effects per EPA Series 890 Endocrine Disruptor Screening Program Test Guidelines); Skin Absorption (§ 3.11) covers heavy-metal compounds on ACGIH TLV with skin notation or DFG MAK with skin absorption H notation at ≥1% in the product or summing to ≥1% with the same target organ; Toxicity to Aquatic Life (§ 3.14) covers heavy-metal compounds with acute LC50 <100 mg/L; Bioaccumulating Compounds (§ 3.16) covers heavy-metal compounds with BCF ≥500 or log K_ow ≥4.

Other criterion-family additions in Edition 2.6 relevant to heavy-metal-adjacent contamination

Methods (brief)

Not applicable in the experimental sense. This is the binding text of a third-party voluntary environmental certification standard, not an analytical study. It does not perform original sampling, analytical measurement, or contamination quantification. The standard does not specify the analytical methods Green Seal uses to verify heavy-metal absence in formulated products or in primary packaging; those audit methods are located in Green Seal’s certification audit procedures, not in the standard text itself. The standard does, however, name the test methods that conformity assessment for each non-metal criterion shall follow.

The standard references the following test-method identifiers in its non-metal criteria (preserved here as scientific-method names per CLAUDE.md Part 14 Exception 2):

• Acute toxicity: existing component-level acute-toxicity data; weighted-average mixture formula TP = (Σ wt_i / TV_i)⁻¹ where TP = toxicity of product, wt_i = weight fraction of component i, TV_i = toxicity value LD50 for component i (§ 3.3, p. 12); pH-based skin/eye corrosivity assumption with pH ≤2.0 or pH ≥11.5 (§ 3.4, p. 12).
• Skin sensitization: component-level data, evaluated for components at 0.01% or more in undiluted product (§ 3.10, p. 13).
• Skin Absorption screening lists: ACGIH Threshold Limit Value list with skin notation; German Deutsche Forschungsgemeinschaft (DFG) Maximum Allowable Concentrations (MAK) list with H notation (§ 3.11, p. 13).
• Endocrine Disruptors screening: EPA List of Chemicals for Tier 1 Screening; EPA Series 890 Endocrine Disruptor Screening Program Test Guidelines (§ 3.7, p. 13).
• Chronic inhalation toxicity: OECD Harmonized Integrated Classification System for Human Health and Environmental Hazards of Chemical Substances and Mixtures; NOAEL/LOAEL framework with Haber’s rule (C × t = k) for cross-regime extrapolation (§ 3.13.1, p. 16).
• Chamber emissions testing: GREENGUARD Children and Schools Certification Program Method for Measuring and Evaluating Chemical Emissions from Cleaners and Cleaning Maintenance Products and Systems Using Dynamic Environmental Chambers, with inhalation-toxicity criteria as in the method referencing Green Seal Standard GS-37 (§ 3.13.2, pp. 16-17).
• Aquatic toxicity: ISO 7346-2 (fish acute); OECD TG 201 (algae); OECD TG 202 (daphnia); OECD TG 203 (fish) (§ 3.14, p. 17).
• Biodegradability: primary ready-biodegradability criterion (§ 3.15, p. 17) — ISO 7827, 9439, 10707, 10708, 9408, 14593; OECD Methods 301A-F; or OECD 310. Alternative options for substances not exhibiting ready biodegradability (§ 3.15, pp. 17-18) — OECD 303A Coupled Units Test (DOC removal >90%); ISO 9887 or 9888 or OECD 302A-C (inherent biodegradability with LC50 ≥100 mg/L); EPA BioWin (EpiSuite) QSAR acceptable when experimental data unavailable.
• Bioaccumulation: OECD TG 305 preferred source for BCF; biodegradability per § 3.15 may rebut the bioaccumulation classification (§ 3.16, p. 18).
• VOC content: California Air Resources Board (CARB) Method 310 (or equivalent), modified to include all fragrances and all volatile organic components present in the product at 0.01% or more (CARB Method 310 itself exempts fragrances and VOCs <0.1%); alternative: summing per-weight contributions from all volatile organic components present in the product at 0.01% or more; VOC threshold defined as vapor pressure >0.1 mm Hg at 1 atm and 20 °C (§ 3.12, p. 14 with footnote 11).
• Combustibility flashpoint: ASTM D92-05a (Cleveland Open Cup); ISO 13736 (Abel Closed-Cup); ISO 2719 (Pensky-Martens Closed-Cup); ASTM D 4206 (sustained-flame test) (§ 3.19, p. 18).
• Antimicrobial efficacy / antimicrobial pesticide product registration: FIFRA registration with no unresolved efficacy failures and no unresolved compliance or enforcement actions; FIFRA Efficacy Test Protocols for minimum risk pesticide-based products; non-US products shall meet appropriate efficacy requirements for the target organism(s) per Health Canada or PMRA where applicable (§ 2.3, p. 11; Annex A Registered Antimicrobial Pesticide Product, pp. 30-31).
• Product Performance (§ 2.1):
  • Deck/siding/outdoor furniture and boat/motor vehicle/tire/waterless motor vehicle cleaning: ≥80% particulate soil removal per ASTM D4488 A5 (note: ASTM D4488 has been withdrawn per footnote 5 p. 9, but is identified as still the best available method, available for purchase, and regularly used by laboratories to test performance).
  • Motor vehicle wax/polish/sealant/glaze: performance equivalent to or better than control per ASTM D 3836 or ASTM D6625.
  • Automatic dish cleaning: soil removal per § 2.2 Alternative Performance Requirements with colored bleachable soil, dry starchy soil (amylase-specific), and dry proteinaceous soil (protease-specific); test at 130 ± 5 °F (54.4 ± 3.8 °C) in household machine.
  • Rinse agent products and combined dish cleaning/rinse agent for automatic dishwashers: visual rating ≥2 per ASTM D3556 or CSPA DCC-05A.
  • Hand dish cleaning: soil removal per § 2.2 with ASTM D4009 soils B and D (or equivalent); test at 110 °F (43°C) per FDA Food Code regulations (footnote 6).
  • Furniture polish: gloss, water/smear protection, clean-ability per § 2.2.
  • Graffiti removers: effectiveness in removing graffiti markings (aerosol paint, felt tip pen, crayon, lipstick) while maintaining substrate appearance per § 2.2.
  • Metal cleaning: Cleaning Effectiveness Factor (CEF) ≥0.80 per ASTM G122.
  • Motor vehicle windshield washing fluid: ≥3 rating in each of soil removal, smearing, streaking per CSPA DCC-09; winter formula remains liquid for ≥24 hr at 0°F (-17.8°C).
  • Optical lens cleaning: ≥3 rating in each of soil removal, smearing, streaking per CSPA DCC-09.
  • Oven cleaning: ≥90% soil removal in CSPA DCC-12 with test soils A or B.
  • Upholstery cleaning: cleaning efficiency and resoiling resistance per § 2.2; may use warm/hot water if required by test method or for cold-water performance degradation.
• Child-resistant packaging (Annex B alternative): ASTM D3475 classification; testing per ISO 8317 or European Standard EN 862; reference to U.S. Code of Federal Regulations Title 16 Part 1700 and Title 40 Part 157 (Poison Prevention Packaging Act) (Annex A Child-Resistant Packaging, p. 25).
• Microbiological methods (Annex D): JECFA Combined Compendium of Food Additive Specifications standard microbiological analytical methods (pathogenic microorganism testing); EPA/Office of Pesticide Programs SOP or AOAC International Use Dilution Method for Testing Disinfectants SOP MB-05-04 (antimicrobial susceptibility); Kirby-Bauer disk method (antibiotic susceptibility); EFSA Qualified Presumption of Safety (QPS) List (spray-packaging permitted species); A.I.S.E. Spray Protocol (2020) (inhalation exposure testing).
• Reference scientific-society lists: AOEC (Association of Occupational and Environmental Clinics) asthmagen list; State of California Safe Drinking Water and Toxic Enforcement Act of 1986 (Proposition 65, California Code of Regulations Title 22 Division 2 Subdivision 1 Chapter 3 Sections 1200 et seq.) for reproductive toxin classifications; IARC, NTP, EPA IRIS, OSHA CFR 29 §1910.1003(a)(1) for carcinogen classifications; GHS Category 1 H334 (respiratory sensitization); GHS Category 1A/1B/1C H314 (skin corrosion/irritation); GHS Category 1 H318 (serious eye damage); GHS Category 1 H317 (skin sensitization); GHS Categories 1 and 2 H340/H341 (germ-cell mutagenicity); GHS Categories 1 and 2 H370/H371/H372/H373 (target-organ toxicity); EPA list of Class I and Class II Ozone-Depleting Substances and GHS Category 1 H420 (ozone-layer hazard); National Primary Drinking Water Standards 40 CFR Part 141 (incidental-contaminant carve-out from “component”).
• International biosafety designation lists (Annex A WHO Risk Group 1): Australia/New Zealand; Belgium; Switzerland; United Kingdom; Germany; United States Department of Health and Human Services NIH; European Commission; Singapore; Japan.
• Trade and labelling standards: International Fragrance Association (IFRA) code of practice; INCI (International Nomenclature of Cosmetic Ingredients) and HCPA Ingredient Dictionary for product label ingredient lines; USDA NOP (National Organic Program) for organic claims.

Speciation. Edition 2.6 maintains the hexavalent-chromium speciation discipline: all three by-name heavy-metal clauses (Colorants § 3.21; Prohibited Components § 3.18; Packaging Heavy Metal Restrictions § 5.5) name “hexavalent chromium” specifically and never name “chromium” without speciation. Arsenic is not speciated (the Colorants clause names “arsenic” without inorganic/total distinction; arsenic does not appear in Prohibited Components or Packaging clauses). Mercury is not speciated (the Colorants and Packaging clauses name “mercury” without inorganic/organic/methyl distinction; mercury does not appear in Prohibited Components).

Basis. The Colorants and Prohibited Components clauses operate as binary prohibitions on intentional formulation with no numerical concentration threshold reproduced in the standard text. The Packaging Heavy Metal Restrictions clause expresses its numerical ceiling as a sum of the four named metals’ concentrations not exceeding 100 ppm by weight in the packaging material; the basis is mass-per-mass of packaging, not of the formulated product within the packaging. Annex A defines “Component” as a constituent deliberately added at any level for continued presence, or a contaminant present above 0.01% by weight of a product. VOC content limits are expressed as percent by weight of the product as used. Eutrophication phosphorus limit is expressed as percent by weight in the product as used. Concentration ratios for specific specialty categories (boat cleaning, motor vehicle cleaning, deck/siding/outdoor furniture cleaning) are expressed as 1:8 minimum concentrate-to-use solution dilution ratios. Acute oral and dermal toxicity thresholds are mass-per-mass body weight (mg/kg). Inhalation LC50 is parts-per-million by volume in air at 1 hr (ppmV). Aquatic LC50 is mass-per-volume in water (mg/L). Annex B’s powder/solid/non-aqueous-liquid alternate threshold of 300 mg/kg replaces the 5,000 mg/kg threshold for the oral LD50 only and does not change the inhalation, dermal, aquatic, or packaging thresholds.

Naturally-occurring elements carve-out. Annex A’s “Component” footnote 18 (p. 26) states that naturally occurring elements (and chlorinated organics from water-supply chlorination) are not considered components if their concentrations are below applicable maximum contaminant levels in the National Primary Drinking Water Standards (40 CFR Part 141). This carve-out is relevant for heavy-metal contaminants entering the product through water inputs or naturally-occurring trace presence in raw materials, distinct from intentional addition.

Implications

• The standard documents Green Seal’s current operative regulatory floor for heavy metals in specialty household cleaning products. Heavy-metal coverage operates through three by-name mechanisms (Colorants 9-metal exclusion, Prohibited Components 3-metal list, Packaging 4-metal sum ≤100 ppm) plus indirect compound-by-compound coverage via the Carcinogens, Mutagens/Neurotoxins/Systemic Toxins, Endocrine Disruptors, Skin Absorption, Aquatic Toxicity, and Bioaccumulating Compounds criteria. Downstream HMI synthesis citing GS-52 as a regulatory floor for heavy metals in specialty household cleaning products should differentiate the by-name mechanisms (binary prohibitions on intentional addition / introduction; the 100 ppm packaging sum is the single explicit numerical ceiling) from indirect coverage via the broader criterion families.
• GS-52 and the sibling greenseal2024-gs37-industrial-institutional-cleaners use identical by-name heavy-metal mechanisms (same Colorants 9-metal list; same Prohibited Components/Ingredients 3-metal list of Pb, Cr-VI, Se; same Packaging Heavy Metal Restrictions 4-metal sum and 100 ppm ceiling) but address non-overlapping product scopes (specialty household vs industrial/institutional general-purpose/restroom/glass/carpet). Downstream HMI synthesis treating Green Seal as a regulatory baseline for heavy metals in cleaning products should route GS-52 to household specialty product categories and GS-37 to industrial and institutional general-purpose product categories; the sibling Green Seal Standard GS-8 (Cleaning Products for Household Use) — pending ingest from the same KADC folder — is the third companion standard covering household general-purpose, restroom, glass, and carpet cleaners.
• Edition 2.6 extends the GS-52 Prohibited Components list beyond GS-37’s parallel § 2.1.13 by adding halogenated organic solvents, nitro-musks, o-phenylphenol, ozone-depleting compounds, polycyclic musks, TRI PBT chemicals, and triclosan to the 2-butoxyethanol / alkylphenol ethoxylates / phthalates / Pb-Cr-VI-Se baseline that both standards share. GS-37 Edition 7.8 (June 2022) adds PFAS as a separate § 2.1.10 clause that is not present in GS-52 Edition 2.6 (November 2021). These differences reflect each standard’s product-scope-specific contaminant concerns rather than a Green Seal-wide policy difference; future synthesis comparing the two should treat the broader GS-52 § 3.18 list and the GS-37 PFAS clause as parallel additions rather than as evidence of policy drift.
• The 1:8 minimum dilution ratio requirement (§ 3.23) for boat cleaning, motor vehicle cleaning, and deck/siding/outdoor furniture cleaning products is a concentrate-and-dose requirement targeting outdoor/direct-release product categories where rinse water typically bypasses sewage treatment. This is GS-52-specific (GS-37’s § 4.4.1 concentrates clause requires 1:32 for general-purpose cleaners and 1:16 for glass/restroom/carpet cleaners with different in-scope categories). HMI synthesis citing concentrate-and-dose policy in cleaning products should note the by-category granularity rather than treating concentrate requirements as a single Green Seal policy.
• The CARB VOC table reproduced at pp. 14-16 of Edition 2.6 is the binding ceiling for product categories regulated by CARB and is the standard’s most extensive quantitative table by row count (26 product-category rows). The table reproduces CARB’s regulatory limits as the binding VOC ceiling and is updated to reflect any future CARB amendments per footnote 12. The table is not a heavy-metal limit; it is the volatile-organic-component limit for the specialty household cleaner formulated product. HMI sessions interpreting Green Seal as a heavy-metal regulatory floor for specialty household cleaning should treat the VOC table as adjacent-but-not-equivalent regulatory coverage.
• This standard text is not a primary source for any contamination distribution, occurrence value, or threshold-setting analysis. It is the binding programme document recording what compliance to GS-52 requires. HMTc threshold-setting work on specialty household cleaning product categories should treat this standard as upstream regulatory context, not as a literature contributor to per-analyte percentile calculations.

Limitations

• Standard text, not occurrence data. The standard contains no original sampling, no analytical measurements, no contamination distributions, and no by-product occurrence values. It documents what compliance to GS-52 Edition 2.6 requires, not what products actually achieve. Any HMI session reasoning about how many specialty household cleaning products meet the GS-52 numerical limits must consult Green Seal’s certification database (greenseal.org) or independent occurrence surveys, not this standard text.
• One explicit heavy-metal numerical limit. The single explicit heavy-metal numerical limit is the § 5.5 Packaging Heavy Metal Restrictions 100 ppm sum-of-concentrations ceiling on the four named metals (Pb + Hg + Cd + Cr-VI) in primary packaging. All other heavy-metal coverage in Edition 2.6 is binary prohibition on intentional addition (Colorants 9-metal exclusion) or intentional formulation (Prohibited Components 3-metal list), or is indirect class-membership gating via the Carcinogens / Reproductive Toxins / Mutagens / Neurotoxins / Systemic Toxins / Endocrine Disruptors / Skin Absorption / Aquatic Toxicity / Bioaccumulating Compounds criterion families. Element-specific numerical concentration ceilings in the formulated product itself are not specified in Edition 2.6.
• Audit/verification methodology not in the standard text. The standard does not specify the analytical methods Green Seal uses in compliance verification for heavy-metal absence in formulated products or in primary packaging (e.g., ICP-MS, ICP-OES, GFAAS, XRF for packaging screening), nor LOD/LOQ targets, nor sample-prep digestion protocols. Those methods are in Green Seal’s internal certification audit procedures and are not reproduced in the published standard text.
• Scope is specialty household only. The standard explicitly excludes general-purpose, bathroom, glass, and carpet cleaners for household use (those fall under Green Seal GS-8 — Cleaning Products for Household Use, not yet ingested in HMI); the same categories for industrial and institutional use (Green Seal GS-37 — sibling page greenseal2024-gs37-industrial-institutional-cleaners); industrial and institutional versions of any in-scope specialty product; floor finish/strippers (GS-40 for industrial/institutional and unspecified for household); hand cleaners (GS-41 for industrial/institutional, GS-44 for household); cleaners/degreasers in production/maintenance applications (GS-34); dry erase board cleaning (GS-37); laundry care (GS-48 in development); paint remover/thinners; products containing enzymes sold in spray packaging; pump and sewer treatment; air fresheners; sterilizers/sporicides; and sterilization for critical/semicritical medical devices. HMI sessions seeking Green Seal heavy-metal coverage for household-versus-specialty product splits should consult GS-8 (household general-purpose cleaners — sibling KADC file Green_Seal_GS-8_Household_Cleaners_2022.pdf pending ingest) and the other Green Seal standards listed in Appendix 1 in addition to GS-52.
• Withdrawn ASTM D4488 performance method. The Deck/Siding/Outdoor Furniture and Boat/Motor Vehicle/Tire/Waterless Motor Vehicle Cleaning performance criteria (§§ 2.1.1, 2.1.2) reference ASTM D4488 A5, which Green Seal acknowledges in footnote 5 (p. 9) has been withdrawn but is identified as “still the best available method,” is still available for purchase, and is regularly used by laboratories to test performance. Conformity assessment relying on a withdrawn ASTM method is a noted procedural artefact of the standard.
• B-tier qualitative source. Evidence tier B because: (i) the binding text of a third-party voluntary environmental certification standard, the operative current reference for Green Seal specialty household cleaner certification; (ii) no original measurements, no analytical methods used by Green Seal in compliance verification, no contamination values; (iii) the one explicit heavy-metal numerical limit (Packaging 100 ppm Pb + Hg + Cd + Cr-VI sum) is reproduced from the standard’s own clause text and is the binding ceiling for GS-52-certified products. B-tier reflects the standard’s binding-text status (vs. the C-tier sibling 2009 GS-37 version-comparison document, which is a comparison artefact rather than the binding text); A-tier is reserved for peer-reviewed occurrence/exposure studies, not for programme standards.
• No CAS numbers or compound enumeration for named metals. The Colorants, Prohibited Components, and Packaging Heavy Metal Restrictions clauses name metals at the element level only (“lead”, “mercury”, “cadmium”, “hexavalent chromium”, “arsenic”, “nickel”, “cobalt”, “manganese”, “selenium”) without CAS numbers or compound-class enumeration. The Prohibited Components clause uses “either in the elemental form or compounds” as a speciation qualifier on the three Prohibited Components metals (Pb, Cr-VI, Se). The Colorants and Packaging clauses do not carry that qualifier; “intentionally added” and “intentionally introduced” are the operative tests. HMI sessions interpreting metal coverage at the compound level must default to broad coverage absent narrower specification.
• Selenium named in Colorants and Prohibited Components clauses but not in HMI’s metal taxonomy. Selenium is named in two of the three by-name heavy-metal mechanisms in Edition 2.6 (Colorants 9-metal exclusion and Prohibited Components 3-metal list) but is not currently a slug in HMI’s wiki/metals/ taxonomy. Selenium is therefore omitted from the metals: frontmatter array per CLAUDE.md Part 14 (taxonomy slugs only) and is surfaced as a missing-slug observation in Verification notes; if a wiki/metals/selenium.md page were created, this standard would be a regulatory_context contributor (the same missing-slug pattern as the sibling GS-37 page).
• Most GS-52 in-scope product categories not yet in HMI taxonomy. Appendix 1 enumerates 30+ in-scope specialty household categories (adhesive remover, boat cleaning, boat wax, chewing gum remover, deck/siding/outdoor furniture cleaning, electronic cleaning, fruit and vegetable wash, furniture polish, graffiti remover, grout cleaning, holding tank treatment, leather cleaning, metal cleaning, mold and mildew stain remover, motor vehicle cleaning/dressing/windshield washing fluid/wax/polish/sealant/glaze, optical lens cleaning, pressurized gas dusting, recreational vehicle tank treatment, rust stain remover, septic tank treatment, stone cleaning, tire and wheel cleaning, upholstery cleaning, waterless motor vehicle cleaning, …). HMI’s current wiki/products/ taxonomy includes only six matches (automatic-dishwasher-detergents; dish-soaps-manual; drain-maintainers-cleaners; odor-removers-hard-surfaces; oven-grill-bbq-cleaners; rinse-aids). The remaining 25+ in-scope categories are surfaced as missing-slug observations in Verification notes; new product pages are Karen’s Step 0 Lock decision and are not created by this ingest.

Provenance

• Source PDF: raw/manual-fetch/Kimi_Agent_Download Corruption Issue/household_papers/06_Regulatory_EPA_GreenSeal/Green_Seal_GS-52_Specialty_Household_Cleaners_2022.pdf
• SHA-256: adfeaa5ff87d619c846e9e969f7e7bc5baa5b41cdffeb609c405869b738c9d30
• File size: ~624 KB; 41 pages (cover + p. 2 mission + pp. 3-4 Contents + p. 5 Foreword + pp. 6-7 Acronyms + pp. 8-23 main clauses 1-7 + pp. 24-33 Annex A Definitions + pp. 34-35 Annex B Powders/Solids/Non-Aqueous Liquids + p. 36 Annex C Enzymes + pp. 37-38 Annex D Microorganisms + pp. 39-40 Appendix 1 Scope + p. 41 Appendix 2 Naturally Derived Components).
• Publisher: Green Seal, Inc. (US-based independent non-profit environmental certifier; founded 1989, Washington DC).
• Standard identifier: GS-52 (Green Seal Standard 52). Edition 2.6.
• Issuance date: November 11, 2021 (Edition 2.6 issuance; replaces Edition 2.5 from April 8, 2020).
• Corrections/clarifications last made: January 28, 2022 (per Foreword, p. 5).
• Document title (cover): “GS-52 — Green Seal Standard for Specialty Cleaning Products for Household Use — Edition 2.6 — November 11, 2021”.
• Document title (header on every page): “SPECIALTY CLEANING PRODUCTS FOR HOUSEHOLD USE, GS-52”.
• DOI: none assigned (programme standard).
• License: © 2021 Green Seal, Inc.; per cover page, “Green Seal’s Standards are copyrighted to protect Green Seal’s publication rights. There are no restrictions on using the criteria in the design or evaluation of products.”
• Access URL: https://www.greenseal.org/green-seal-standards/library/
• Access date: 2026-06-03.
• Acquisition path: included in the Kimi Agent Download Corruption Issue (KADC) folder household_papers/06_Regulatory_EPA_GreenSeal/, alongside sibling Green Seal documents greenseal2024-gs37-industrial-institutional-cleaners (the binding GS-37 Edition 7.8 standard) and greenseal2009-gs37-version-comparison (the 2006-vs-2008 GS-37 version-comparison artefact), plus uningested sibling Green Seal document Green_Seal_GS-8_Household_Cleaners_2022.pdf (the binding GS-8 household general-purpose cleaner standard, also a 2022-corrected ©2021 document), and alongside the broader regulatory/programme set ec2024-eu-ecolabel-user-manual-detergents, ral2024-eu-ecolabel-factsheet-household-detergents, jrc2025-eu-ecolabel-revision-detergents-tr2-ahwg2, eeb2022-eu-ecolabel-30-year-briefing, epa2024-safer-choice-standard-dfe, epa2024-safer-choice-master-criteria-ingredients, davidsuzuki2014-toxic-household-cleaners, NIOSH HHE 2015-0053 (hospital cleaning), California SB258 right-to-know factsheets, NY State Cleaning Product Disclosure Programme, WECF Women and Chemicals briefing, and Bello et al. 2009 occupational exposures in cleaning.

Wiki pages this source may touch

• automatic-dishwasher-detergents — within the GS-52 scope (§ 2.1.6.1 Automatic Dish Cleaning Products performance criterion: colored bleachable soil, dry starchy soil (amylase-specific), dry proteinaceous soil (protease-specific); household machine; 130 ± 5 °F (54.4 ± 3.8 °C); Appendix 1 p. 39). Routed as regulatory_context: all three by-name heavy-metal mechanisms apply (Colorants 9-metal exclusion; Prohibited Components 3-metal list; Packaging Heavy Metal Restrictions 100 ppm Pb+Hg+Cd+Cr-VI sum). Automatic dishwasher detergents are explicitly named in the scope and have a dedicated performance criterion in the standard.
• dish-soaps-manual — within the GS-52 scope (§ 2.1.6.3 Hand Dish Cleaning Products performance criterion: ASTM D4009 soils B and D or equivalent; tested at 110 °F (43°C) per FDA Food Code; Appendix 1 p. 39). Routed as regulatory_context. Same heavy-metal coverage. Hand dish cleaning is in scope EXCEPT for hand dish cleaning products formulated with antimicrobial agents to support antimicrobial claims (those excluded per Appendix 1 p. 39).
• drain-maintainers-cleaners — within the GS-52 scope (“drain additive/cleaning products”, Appendix 1 p. 39; Annex A defines as “Products designed to remove soil or grease from drains, pipes, or traps through chemical, biological, or enzymatic action. Products designed to remove soil or grease from drains, pipes, or traps through physical action, such as air pressure devices, plungers, or augurs, are not included” p. 26). Routed as regulatory_context. Same heavy-metal coverage.
• odor-removers-hard-surfaces — within the GS-52 scope (“odor remover products”, Appendix 1 p. 39; Annex A defines as “A product designed or labeled to inhibit the ability of soils to create malodors, or functions to entrap, encapsulate, neutralize, convert, or eliminate malodor molecules through a physio-chemical process that is not simply masking or overpowering odors” p. 29). Routed as regulatory_context. Same heavy-metal coverage. CARB VOC limits 25% (aerosol, effective 12/31/2010) and 6% (nonaerosol, effective 12/31/2010) apply per § 3.12 CARB table. Distinct from air fresheners (Annex A: products “providing no cleaning or odor removal function”), which are EXCLUDED from GS-52 scope.
• oven-grill-bbq-cleaners — within the GS-52 scope (§ 2.1.12 Oven Cleaning Products performance criterion: ≥90% soil removal in CSPA DCC-12 with test soils A or B; Appendix 1 p. 39; Annex A defines Oven Cleaning Product as “A product intended for use in removing organic soil from metallic or porcelain surfaces of ovens, barbeques, fryers, and grills” p. 29). Routed as regulatory_context. Same heavy-metal coverage. CARB VOC limits 8% (aerosol/pump spray, effective 1/1/1993), 5% (liquid, effective 1/1/1993), 4% (nonaerosol, effective 12/10/2011) apply per § 3.12 CARB table.
• rinse-aids — within the GS-52 scope (§ 2.1.6.2 Rinse Agent Products and Combined Dish Cleaning/Rinse Agent Products for Automatic Dishwashers performance criterion: visual rating ≥2 per ASTM D3556 or CSPA DCC-05A; Appendix 1 p. 39 dish cleaning products “(e.g., hand dish, automatic dish, rinse agent products)”; Annex A defines Rinse Agent Product as “A product which is formulated to improve the drying effect and the appearance of articles cleaned by means of automatic household dishwashing machines” p. 31). Routed as regulatory_context. Same heavy-metal coverage.
• lead — named in ALL THREE by-name heavy-metal clauses: Colorants (§ 3.21, p. 19), Prohibited Components (§ 3.18, p. 18, “lead … either in the elemental form or compounds”), and Packaging Heavy Metal Restrictions (§ 5.5, p. 21, among the four named metals subject to the 100 ppm sum ceiling). Routed as regulatory_context. Edition 2.6 maintains lead as the heavy metal with the broadest by-name coverage in GS-52, matching the parallel coverage in GS-37 Edition 7.8.
• mercury — named in the Colorants clause (§ 3.21, p. 19) and in the Packaging Heavy Metal Restrictions clause (§ 5.5, p. 21, among the four-metal sum); NOT named in the Prohibited Components clause (§ 3.18). Routed as regulatory_context. Same by-clause coverage pattern as GS-37.
• cadmium — named in the Colorants clause (§ 3.21) and in the Packaging Heavy Metal Restrictions clause (§ 5.5); NOT named in the Prohibited Components clause. Routed as regulatory_context. Same by-clause coverage pattern as mercury.
• chromium-hexavalent — named in ALL THREE by-name heavy-metal clauses: Colorants (§ 3.21, “hexavalent chromium”), Prohibited Components (§ 3.18, “hexavalent chromium … either in the elemental form or compounds”), and Packaging Heavy Metal Restrictions (§ 5.5, among the four-metal sum). Routed as regulatory_context. Edition 2.6 maintains the hexavalent-chromium speciation discipline; “chromium” without speciation does not appear by name in Edition 2.6.
• arsenic — named in the Colorants clause (§ 3.21) only; NOT named in Prohibited Components or Packaging Heavy Metal Restrictions clauses. Routed as regulatory_context. Same by-clause coverage as GS-37.
• nickel — named in the Colorants clause (§ 3.21) only. Routed as regulatory_context. Same by-clause coverage as GS-37.
• cobalt — named in the Colorants clause (§ 3.21) only. Routed as regulatory_context. Same by-clause coverage as GS-37.
• manganese — named in the Colorants clause (§ 3.21) only. Routed as regulatory_context. Same by-clause coverage as GS-37 Edition 7.8 (the Colorants 9-metal list is identical between GS-52 Edition 2.6 and GS-37 Edition 7.8).

Verification notes

• Identity-check results on 2026-06-03 against wiki/sources/: DOI null (programme standard, no DOI assigned); raw_handle grep for KADC_green-seal-gs-52-specialty-household-cleaners returned no existing matches; cite-key grep for variants greenseal2022, greenseal-gs52, gs-52-specialty, gs52-edition-2, and green-seal-gs-52 returned no existing matches. Ingested as NEW. Sibling Green Seal documents (GS-37 Edition 7.8 industrial/institutional 2024 at greenseal2024-gs37-industrial-institutional-cleaners and GS-37 version-comparison 2009 at greenseal2009-gs37-version-comparison) are already ingested; the GS-8 household cleaners 2022 PDF in the same KADC folder is not yet ingested and would be a separate NEW source page.
• SHA-256 of the source PDF was computed from disk on 2026-06-03 (adfeaa5ff87d619c846e9e969f7e7bc5baa5b41cdffeb609c405869b738c9d30).
• The document has no DOI (programme standard, not a journal article). doi is null and no_doi_assigned: true.
• Year field set to 2022 to reflect the version retrieved: cover page ©2021 Green Seal, Inc.; Edition 2.6 issued November 11, 2021; corrections/clarifications last made January 28, 2022 per Foreword (p. 5); source PDF filename uses 2022. The cite_key greenseal2022-gs52-specialty-household-cleaners follows the same Karen/Claude convention used for the sibling greenseal2024-gs37-industrial-institutional-cleaners (year reflects the most recent corrections/document-version date, which is the document state as retrieved, not the underlying edition issuance).
• Evidence tier set to B on the basis of: (i) the binding text of a third-party voluntary environmental certification standard, the operative current reference for Green Seal specialty household cleaner certification; (ii) no original measurements, no analytical methods, no contamination values; (iii) the one explicit heavy-metal numerical limit (Packaging 100 ppm Pb+Hg+Cd+Cr-VI sum) is the binding ceiling for GS-52-certified products; (iv) A-tier is reserved for peer-reviewed occurrence/exposure studies, not for programme standards. Same tier rationale as the sibling greenseal2024-gs37-industrial-institutional-cleaners.
• Source type set to regulatory-standard. The document is the binding text of a third-party voluntary environmental certification standard. It is not a peer-reviewed paper, not a Commission Decision or government regulation, not an NGO briefing, not a consultation deck, not a user manual, and not a version-comparison artefact (the sibling 2009 GS-37 page carries regulatory-standard-comparison for that distinction).
• License set to ”© 2021 Green Seal, Inc. (programme standard; per cover page Green Seal’s Standards are copyrighted to protect publication rights, with no restrictions on using the criteria in the design or evaluation of products)” reflecting the cover-page copyright notice verbatim.
• metals: ["[[metals/lead]]", "[[metals/mercury]]", "[[metals/cadmium]]", "[[metals/chromium-hexavalent]]", "[[metals/arsenic]]", "[[metals/nickel]]", "[[metals/cobalt]]", "[[metals/manganese]]"] because every metal in this list is by-name named in at least one of the three by-name heavy-metal clauses (Colorants § 3.21; Prohibited Components § 3.18; Packaging Heavy Metal Restrictions § 5.5). Selenium is named in BOTH the Colorants clause AND the Prohibited Components clause but is NOT in HMI’s metal taxonomy snapshot (no wiki/metals/selenium.md); selenium is therefore omitted from the metals: array per CLAUDE.md Part 14 (taxonomy slugs only) and surfaced as a missing-slug observation below — same handling as the sibling greenseal2024-gs37-industrial-institutional-cleaners. [[metals/chromium]] is NOT included because Edition 2.6 names “hexavalent chromium” specifically in all three by-name clauses (Colorants, Prohibited Components, Packaging Heavy Metal Restrictions) and does not name “chromium” without speciation; this matches the parallel GS-37 Edition 7.8 speciation discipline. 2-butoxyethanol, alkylphenol ethoxylates, halogenated organic solvents, nitro-musks, o-phenylphenol, ozone-depleting compounds, phthalates, polycyclic musks, TRI PBT chemicals, triclosan, and bisphenol A are organic-substance or class-membership additions to the Prohibited Components / Packaging clauses, not metals, and are not added to the metals: array.
• ingredients: [] because the source is a programme standard that names categories of substances (heavy metals, halogenated organic solvents, alkylphenol ethoxylates, phthalates, 2-butoxyethanol, ozone-depleting compounds, optical brighteners, nitro-musks, polycyclic musks, o-phenylphenol, TRI PBT chemicals, triclosan, bisphenol A, chlorinated packaging material, titanium dioxide-with-enzyme-exception) but not food or personal-care ingredients in HMI’s ingredient taxonomy (which is a food-ingredient taxonomy per the taxonomy snapshot). No new ingredient pages created (per skill hard constraints).
• products lists six existing product slugs covering the subset of GS-52 in-scope categories from Appendix 1 that have HMI taxonomy slugs: automatic-dishwasher-detergents (automatic dish cleaning, § 2.1.6.1); dish-soaps-manual (hand dish cleaning, § 2.1.6.3); drain-maintainers-cleaners (drain additive/cleaning, Appendix 1); odor-removers-hard-surfaces (odor remover, Appendix 1); oven-grill-bbq-cleaners (oven cleaning, § 2.1.12); rinse-aids (rinse agent products, § 2.1.6.2). All six slugs already exist in wiki/products/ per the taxonomy snapshot; no new product pages created (per skill hard constraints). Appendix 1 also includes 25+ specialty household categories not currently in HMI taxonomy (adhesive remover, boat cleaning, boat wax/polish/sealant/glaze, chewing gum remover, deck/siding/outdoor furniture cleaning, electronic cleaning, fruit and vegetable wash, furniture polish, graffiti remover, grout cleaning, holding tank treatment, leather cleaning, metal cleaning, mold and mildew stain remover, motor vehicle cleaning/dressing/windshield washing fluid/wax/polish/sealant/glaze, optical lens cleaning, pressurized gas dusting, recreational vehicle tank treatment, rust stain remover, septic tank treatment, stone cleaning, tire and wheel cleaning, upholstery cleaning, waterless motor vehicle cleaning) — these are new-page candidates via Karen’s Step 0 Lock and are NOT created per skill hard constraints; they are surfaced as missing-slug observations below.
• matrices: [] because the source is a multi-product-category programme standard without a single matrix focus. No new matrix slug is proposed.
• jurisdictions: [US] because Green Seal, Inc. is a US-based non-profit and GS-52 is a US voluntary environmental standard. Green Seal certifications are accepted internationally but the standard itself is published from a US programme.
• near_duplicates: [] because the sibling greenseal2024-gs37-industrial-institutional-cleaners is the binding text of a substantively different Green Seal standard (GS-37 covers industrial and institutional general-purpose / restroom / glass / carpet cleaners; GS-52 covers specialty household cleaners) with non-overlapping product scopes, and the sibling greenseal2009-gs37-version-comparison is a version-comparison artefact for GS-37 specifically. The GS-8 standard in the same KADC folder is for a different scope (household general-purpose cleaners, not specialty household) and is not yet ingested. No near-duplicate found within wiki/sources/.
• Wiki/HMTc firewall (Part 2): the standard does not propose threshold values for HMTc certification, and this page’s Implications section does not propose any. GS-52 is referenced as the operative regulatory floor for specialty household cleaning products with explicit caveats that the standard text contains no occurrence data and no analytical methods for compliance verification. The 100 ppm packaging-metals sum ceiling and all other numerical thresholds in the standard (including the entire CARB VOC regulatory table) are reproduced as regulatory facts; this page makes no claim that any GS-52 numerical limit is a science-based HMI synthesis value or an HMTc threshold proposal. The standard’s footnoted basis for the Prohibited Components heavy-metal list (endocrine disruption, neurotoxicity, systemic toxicity) is reproduced verbatim from the source footnote and is the standard’s own justification, not an HMI synthesis claim. The Implications section’s comparison with the sibling GS-37 standard documents the structural and numerical parallels between the two Green Seal standards (same Colorants 9-metal list, same Prohibited Components 3-metal list, same Packaging 4-metal sum and 100 ppm ceiling) as regulatory-context facts rather than as cross-source synthesis. No Part 2 drift risk.
• Brand firewall (Part 12): the standard names test-method identifiers (ASTM, ISO, OECD, OPPTS, EPA, CARB, GREENGUARD, JECFA, AOAC, A.I.S.E. Spray Protocol, EN 862, AOEC, CSPA DCC, GHS, ATTC), regulatory and standards bodies (Green Seal, FDA, EPA, ACGIH, DFG, OECD, CARB, WHO, EFSA, IARC, NTP, OSHA, USDA NOP, ECHA, ECVAM, CDC, FAO, Health Canada PMRA, NIH), screening lists (ACGIH TLV, DFG MAK, EPA IRIS, OSHA CFR 29 §1910.1003(a)(1), GHS, EFSA QPS, California Proposition 65, EPA Tier 1 Endocrine Disruptor List, EPA Series 890 Test Guidelines, EPA TRI PBT list), certification-programme references (GREENGUARD Children and Schools; IFRA Transparency List; INCI; HCPA Ingredient Dictionary; ATCC; WHO Risk Group 1 nine-country list), and trade associations (HCPA, AISE, ILO) — all of which are scientific-method or regulatory references rather than commercial brand attribution to contamination values. Per CLAUDE.md Part 14 Exception 2 (scientific-method vendor/material names locked 2026-05-17), these are PERMITTED. The standard does not name any commercial brand of specialty household cleaning product. No brand-firewall action required.
• Quantitative content reproduced on this page (Colorants 9-metal list; Prohibited Components 3-metal list plus seven additional non-metal categories; Packaging Heavy Metal Restrictions 4-metal list and 100 ppm sum ceiling; Packaging Other Restrictions phthalates/bisphenol A/chlorinated packaging; acute toxicity oral LD50 5,000 mg/kg, inhalation LC50 20,000 ppmV at 1 hr, dermal LD50 2,000 mg/kg; Annex B 300 mg/kg alternate oral LD50; vapor pressure thresholds 0.1 mm Hg for VOC definition and 1 mm Hg for inhalation-tox; Chronic Inhalation Toxicity NOAEL 1.0 mg/L vapor / Haber’s rule / LOAEL/10 fallback; full CARB VOC regulatory table 26+ category rows pp. 14-16; Aquatic Biodegradability OECD 28-day test percentages 70/60/60/60 with 10-day window; Aquatic Biodegradability alternative DOC removal 90% and LC50 ≥100 mg/L threshold; Bioaccumulating Compounds BCF ≥500 / log K_ow ≥4; Eutrophication 0.5% phosphorus; Toxicity to Aquatic Life LC50 ≥100 mg/L; Combustibility 150°F flashpoint; Concentrates and Dosing 1:8 ratio for boat/motor-vehicle/deck-siding-outdoor-furniture cleaning categories; primary package 25% post-consumer material; Annex B 48-inch / 4-drops drop test; Annex C enzyme encapsulated-solid 0.15 mm diameter floor; Annex D microbial counts 1×10⁷ CFU/mL and 1×10⁹ CFU/g and spray-packaging 10,000 CFU/m³ ceiling; Ingredient threshold 0.01% by weight; Source-Reduced Package 20%; Take-Back Program 50%; Refillable Package 5x; aerosol particle size 10-2.5 µm <1% and no <2.5 µm) is reproduced from the source PDF (pp. 1-41) with page locators. No numerical heavy-metal limits beyond the Packaging 100 ppm sum are stated in the source and none are claimed here. No quantitative content is invented or extrapolated.
• No new ingredient, product, or matrix pages were created during this ingest, per CLAUDE.md Part 10 and the skill’s hard constraints. All product slugs in the frontmatter are existing taxonomy.
• Missing-slug observations surfaced for Karen (not created by this ingest; for future Step 0 Lock or auto-stub decisions):
  • metals/selenium — named in BOTH the Colorants clause (§ 3.21) AND the Prohibited Components clause (§ 3.18) of Edition 2.6 (same two-clause coverage as in the sibling greenseal2024-gs37-industrial-institutional-cleaners). Selenium is not currently in HMI’s metal taxonomy snapshot. If a wiki/metals/selenium.md page were created, this standard would be a regulatory_context contributor; cumulative selenium coverage across the three already-ingested Green Seal pages is freq-4 (GS-52 Edition 2.6 two-clause coverage; GS-37 Edition 7.8 two-clause coverage; GS-37 2008 Fourth Edition one-clause coverage; GS-37 2006 Third Edition one-clause coverage).
  • regulations/green-seal-gs-52 — the underlying GS-52 standard documented on this page. Green Seal’s specialty household cleaner standard is the operative regulatory document; no regulations/green-seal-* slugs currently exist.
  • regulations/green-seal-gs-8 — the Green Seal household general-purpose cleaner standard (sibling KADC PDF Green_Seal_GS-8_Household_Cleaners_2022.pdf pending ingest), explicitly referenced in GS-52’s scope exclusions as the standard covering household general-purpose / floor / restroom / toilet / glass / carpet cleaners.
  • regulations/coneg-model-toxics-in-packaging-1989 — same missing-slug observation as the sibling GS-37 page (U.S. Coalition of Northeastern Governors Model Toxics in Packaging Legislation 1989; same 100 ppm sum of Pb+Hg+Cd+Cr-VI in packaging structural and numerical parallel).
  • regulations/eu-directive-94-62-ec-packaging — same missing-slug observation as the sibling GS-37 page (EU Directive 94/62/EC Article 11; same 100 ppm sum parallel).
  • GS-52 in-scope product categories not in HMI’s wiki/products/ taxonomy (25+ candidates, all from Appendix 1 pp. 39-40): adhesive-remover-products; boat-cleaning-products; boat-wax-polish-sealant-glaze-products; chewing-gum-remover-products; deck-siding-outdoor-furniture-cleaning-products; electronic-cleaning-products; fruit-and-vegetable-wash-products; furniture-polish-products; graffiti-remover-products; grout-cleaning-products; holding-tank-treatment-products; leather-cleaning-products; metal-cleaning-products; mold-and-mildew-stain-remover-products; motor-vehicle-cleaning-products; motor-vehicle-dressing-products; motor-vehicle-windshield-washing-fluid-products; motor-vehicle-wax-polish-sealant-glaze-products; optical-lens-cleaning-products; pressurized-gas-dusting-products; recreational-vehicle-tank-treatment-products; rust-stain-remover-products; septic-tank-treatment-products; stone-cleaning-products; tire-and-wheel-cleaning-products; upholstery-cleaning-products; waterless-motor-vehicle-cleaning-products. None of those are created here (Karen’s Step 0 Lock decision).
• The PDF is 41 pages including the cover page, mission statement, contents (pp. 3-4), Foreword (p. 5), Acronyms (pp. 6-7), main standard text (pp. 8-23), Annex A Definitions (pp. 24-33), Annex B Powders/Solids/Non-Aqueous Liquids (pp. 34-35), Annex C Enzymes (p. 36), Annex D Microorganisms (pp. 37-38), Appendix 1 Scope (pp. 39-40), and Appendix 2 Naturally Derived Components (p. 41). All 41 pages were read in full during ingest (pp. 1-10 in the first read pass, pp. 11-20 in the second, pp. 21-30 in the third, pp. 31-42 in the fourth). All four normative annexes and both informative appendices were read in full. The CARB regulatory limits table (split across pp. 14-16) was read in full and reproduced in Key numbers.
• This page is manual_phase1 ingest by Claude Opus 4.7 on 2026-06-03.
• Audit subagent (fresh-context general-purpose subagent, 2026-06-03) returned verdict PROMOTE with Checks 1, 2, 3, 4, 5 all ✅ clean; subagent flagged ONE minor housekeeping imprecision (not a finding, explicitly “not a blocker”) and it was applied:
  • Housekeeping fix (Check 1 ✅ with one imprecision noted): the CARB table prose intro originally read “spans 26 CARB-regulated product-category rows,” but counting the PDF table at pp. 14-16 yields 25 parent categories that expand to 51 form-specific sub-rows. Re-verified directly: enumerated all 25 parents and counted 51 sub-rows in the reproduced table. Tightened the prose to “spans 25 CARB-regulated product-category families that expand to 51 form-specific sub-rows” with the 25-family list spelled out for downstream reuse. CARB row values, dates, and form descriptors themselves were verified verbatim against the PDF (subagent spot-checked 15+ rows including the Adhesive Remover 5/50/20/70 quartet, Dual-Purpose Air Freshener 60/18/3, Auto Wax 45/3/15, Disinfectant 70/1, Furniture polish 17/(12)/7/3 with parenthetical 12/31/2013, Metal Polish 15/3 with 12/31/2012, Oven 8/5/4 with 12/10/2011 for nonaerosol, Tire/Wheel 8/2, Wood 17/4 — all match exactly); table contents themselves were never in question.
  • Audit checks 1 (numerical fidelity proper — 30+ values verified including the heavy-metal-specific clauses §3.18, §3.21, §5.5; the §3.3 5,000/20,000/2,000 acute toxicity triplet; the §3.16 BCF ≥500 / log K_ow ≥4; the §3.17 ≤0.5% P; the §3.19 >150°F flashpoint; the §3.23 1:8 dilution; the §5.5 100 ppm packaging sum; the §5.4 aerosol particle 10-2.5 µm <1%; Annex B 300 mg/kg + 48-inch / 4-drop; Annex C 0.15 mm; Annex D 1×10⁷ CFU/mL liquid + 1×10⁹ CFU/g solid + 10,000 CFU/m³ spray; Source-Reduced 20% + Take-Back 50% + Refillable ≥5×), 2 (slug vocabulary: all 8 metal + 6 product + sibling-source wikilinks resolve in taxonomy snapshot; selenium correctly omitted with missing-slug flag; all metals: / products: arrays properly quoted-wikilink form; ingredients=[] matrices=[] jurisdictions=[US] all appropriate), 3 (speciation/methods: Cr-VI specific everywhere, arsenic and mercury umbrella per source; methods section correctly notes standard does not specify Green Seal compliance-verification instrumentation; all test-method identifiers (ASTM, ISO, OECD TG, CSPA DCC, CARB Method 310, EN 862, etc.) reproduced verbatim from PDF), 4 (Part 12 brand firewall: zero commercial cleaning-product brands; Green Seal/FDA/EPA/CARB/OECD/ISO/ASTM/ACGIH/DFG/AOEC/GREENGUARD/IFRA/JECFA/AOAC/A.I.S.E./HCPA/USDA NOP/ECHA/ECVAM/ATCC/IARC/NTP/OSHA/EFSA/ILO/NIH/CDC/FAO/Health Canada PMRA/ICCVAM all standards-body / regulator / scientific-society / test-method-developer references under Part 14 Exception 2), and 5 (Part 2 wiki/HMTc firewall: no HMTc threshold proposals; Implications explicitly frames standard as upstream regulatory context not literature contributor to per-analyte percentiles; comparative claims about sibling GS-37 properly scoped to greenseal2024-gs37-industrial-institutional-cleaners; footnoted Prohibited Components basis attributed to source footnote 13 not asserted as HMI synthesis; new-page suggestions properly housed in Verification notes) — all ✅ clean per subagent verdict with no false-positive findings to push back on and no content changes required for Checks 2-5.

Page history

The five most recent substantive edits to this page. The full version history lives in git; when DOI minting comes online (see schema docs), each entry below will also link to a version-pinned DataCite DOI.