U.S. EPA Safer Choice Program (2024) — Master Criteria for Safer Ingredients, Version 2.1

The EPA Safer Choice program’s Master Criteria document, Version 2.1 (October 2024), is the 31-page federal program criteria text that defines how every ingredient (and chemical component) in a product formulation is evaluated for acceptance into the EPA Safer Choice and Design for the Environment (DfE) certification programs. Authored by the Office of Pollution Prevention & Toxics (OPPT), the document operates as the program’s primary tool to advance Green Chemistry and to implement Informed Substitution — the reasoned transition from a chemical of particular concern to safer chemicals or non-chemical alternatives (§1.3, p. 2). The Master Criteria evaluate every ingredient within its functional class context and against ten attributes of concern: acute mammalian toxicity (§5.1), carcinogenicity (§5.2), genetic toxicity (§5.3), neurotoxicity (§5.4), repeated dose toxicity (§5.5), reproductive and developmental toxicity (§5.6), respiratory sensitization (§5.7), skin sensitization (§5.8), environmental toxicity and fate (§5.9), and eutrophication (§5.10).

Heavy-metal relevance of the document is indirect. The Master Criteria do not enumerate, tabulate, or measure any specific heavy metal. They define cut-offs and authoritative-list references that, in operation, would screen heavy-metal compounds: substances on California Proposition 65 (a Safer Choice flagging list under §5.2 and §5.6) include Pb, iAs, Cd, MeHg compounds; IARC Group 1, 2A, 2B classifications (Safer Choice carcinogenicity Table 2) include various inorganic As, Cd, Cr-VI, and Ni compounds; EU CLP H-phrases (H350/H351 for carcinogens, H340/H341 for mutagens, H360/H361/H362 for reproductive toxicants, H372/H373 for repeated dose, H334 for respiratory sensitization, H317 for skin sensitization) cover the harmonised classifications of many heavy-metal compounds in REACH Annex VI. The §5.10 eutrophication clause caps total phosphorus in the finished product at 0.5 weight % (measured as elemental phosphorus) and disallows any inorganic phosphate contribution to that 0.5 % — relevant to the broader Safer-Choice household-cleaning-product matrix but not to heavy-metal occurrence. The document is held in the Heavy Metal Index corpus as the primary-record citation for the Safer Choice / DfE ingredient-acceptance methodology, the federal voluntary certification programme to which HMTc’s household-cleaning-product certification is closest in regulatory neighbourhood.

Key numbers

The document contains no contamination measurements. The reportable quantitative content is the set of GHS-derived toxicological cut-offs that determine whether a chemical passes the Safer Choice Criteria for each attribute of concern.

Section 5.1 — Acute mammalian toxicity (Table 1a, p. 8): GHS thresholds (a chemical does not pass if its median lethal dose or concentration is at or below the listed value)

Inhalation exposure duration: at least four hours; thresholds for inhalation are the same for exposures greater than four hours; exposures of less than four hours are evaluated case-by-case (p. 8). The §5.1 acute-toxicity criterion is additionally failed by any chemical carrying EU CLP H-phrases H300/H301/H302 (fatal/toxic/harmful if swallowed), H310/H311/H312 (fatal/toxic/harmful in contact with skin), H330/H331/H332 (fatal/toxic/harmful if inhaled) — Table 1b, p. 8.

Section 5.2 — Carcinogenicity (Table 2, p. 10): authoritative-list classifications that fail the Criteria

• NTP: “Known to be Human Carcinogen” and “Reasonably Anticipated to be Human Carcinogen.”
• U.S. EPA carcinogen guidelines: (2005/1999) “Carcinogenic to humans,” “Likely to be carcinogenic to humans,” or “Suggestive evidence of carcinogenic potential”; (1996) “Known/Likely”; (1986) Group A, B, or C.
• IARC: Group 1, Group 2A, Group 2B.
• EU CLP classifications: Category 1A (Known), 1B (Presumed), 2 (Suspected) human carcinogen.
• EU CLP hazard statements: H350 (May cause cancer), H350i (May cause cancer by inhalation), H351 (Suspected of causing cancer).
• NIOSH Occupational Carcinogen List.
• GHS: Category 1A, 1B, 2.

Additional flagging lists (§5.2, p. 10): ECHA Endocrine Disruptor Assessment List; substances prioritised for testing under the US EPA Endocrine Disruptor Screening Program; OEHHA Proposition 65 Known to the State to Cause Cancer.

Section 5.3 — Genetic toxicity (Table 3, p. 12)

• EU CLP classifications: Category 1A (substances known to induce heritable mutations in human germ cells), Category 1B (regarded as if they induce heritable mutations in human germ cells), Category 2 (concern owing to possibility of heritable mutation).
• EU CLP hazard statements: H340 (May cause genetic defects), H341 (Suspected of causing genetic defects).
• GHS: Category 1A, 1B, 2 germ-cell mutagenicity.

Per Table 3 footnote (p. 12): Category 3 substances classified solely on positive in-vitro mutagenicity assays may be exempted on EPA expert review if data do not support a concern for possible mutagenic effects.

Section 5.4 — Neurotoxicity (Table 4, p. 13): GHS guidance values from Specific Target Organ Toxicity Repeated Exposure (90-day study basis; values tripled for 28-day studies)

Section 5.5 — Repeated dose toxicity (Table 5a, p. 14): GHS guidance values (90-day study basis; values tripled for 28-day studies and similarly modified for longer-duration studies)

Additional fail conditions (Table 5b, p. 14): EU CLP H372 (Causes damage to organs), H373 (May cause damage to organs).

Section 5.6 — Reproductive and developmental toxicity (Table 6a, p. 16): TSCA 8(e) Guidance Values

Additional fail conditions (Table 6b, p. 16): EU CLP reproductive toxicant Category 1A (known), 1B (presumed), 2 (suspected); hazard statements H360 (May damage fertility or the unborn child), H361 (Suspected of damaging fertility or the unborn child), H362 (May cause harm to breast-fed children). Per Table 6b footnote 5 (p. 16), EU classification criteria do not currently consider a limit dose above which an adverse effect would not trigger classification; EPA will consider evidence demonstrating that a chemical carrying a reproductive/developmental risk phrase did not cause an adverse effect below the Table 6a TSCA 8(e) values, and may pass such a chemical on review.

Section 5.7 — Respiratory sensitization (Table 7, p. 18)

• EU CLP H334 (May cause allergy or asthma symptoms or breathing difficulties if inhaled).
• GHS: Category 1A (high frequency of occurrence or sensitization rate in humans), Category 1B (low to moderate frequency of occurrence or sensitization rate in humans).
• AOEC Exposure Code flagging list: G (generally accepted), Rs (sensitizer-induced asthma), Rr (reactive airway dysfunction syndrome, RADS), Rrs (both Rs and Rr).

Section 5.8 — Skin sensitization (Table 8, p. 19)

• EU CLP H317 (May cause an allergic skin reaction).
• GHS: Category 1A (high frequency of occurrence in humans and/or high potency in animals), Category 1B (low to moderate frequency of occurrence in humans and/or low to moderate potency in animals).

Section 5.9 — Environmental toxicity and fate (Table 12, p. 20): four-row decision matrix on the joint of acute aquatic toxicity, persistence (biodegradation), and bioaccumulation potential

Per the §5.9 footnote 9 (p. 20), “degradation products of concern” are compounds with high acute aquatic toxicity (L/E/IC50 ≤ 10 ppm) that mineralise < 60 % in 28 days. The §5.9 narrative gating clause (p. 20) is: if a chemical is an acute aquatic toxicant (L/E/IC50 < 100 ppm) it must biodegrade rapidly and not be bioaccumulative; if it has low aquatic toxicity (row 4), its half-life must be less than 60 days.

Section 5.10 — Eutrophication (p. 22)

The total level of phosphorus in the product is capped at 0.5 weight % in the product as sold (measured as elemental phosphorus). Inorganic phosphates (as defined in the US EPA New Chemicals Program §3.21 / TSCA NCP Chemical Categories — Inorganic Phosphates, 2010) may not contribute any portion of that 0.5 % phosphorus. The §3.21 inorganic-phosphate category includes phosphoric acid (PO4H3 / OP(=O)(O)O) and its salts or phosphate salts, pyrophosphates, polyphosphates, and organic and inorganic forms of phosphorus that can be oxidised to phosphates rapidly; inorganic forms of phosphonic acid (H2PO3 or OP(=O)O) are not included. Monopotassium phosphonic acid [CAS 13977-65-6] is explicitly carved out as not an algal nutrient.

Section 4.1 (p. 7) — repeated dose testing preference

When data are developed to meet repeated-dose-toxicity requirements, EPA requests that a functional observational battery (e.g., OPPTS 870.6200 Neurotoxicity Screening Battery) be added to the test method to provide neurotoxicity information.

Section 4.3 (p. 7) — EU Risk-Phrase removal

In the October 2024 update (Version 2.1), EPA removed references to the EU Dangerous Substances Directive (67/548/EEC) R-phrases, which is no longer in effect as of June 1, 2015; the EU CLP Regulation (EC) No 1272/2008 is the sole EU classification/labelling legislation in force and is referenced throughout the criteria.

Methods (brief)

Not applicable. This is a federal program criteria document, not an experimental study; there is no sampling, no analytical instrumentation, no contamination measurements. The “method” content of the document is its specification of acceptable test methods that submitters use when developing data for review against the §5 criteria (§6, pp. 23-26), comprising the OECD Test Guidelines (TG) series and the U.S. EPA OPPTS Harmonized Guidelines series cross-referenced by attribute:

• §6.1 Acute mammalian toxicity: OPPTS 870.1100 / 870.1200 / 870.1300; OECD TG 420, 423, 425, 402, 403.
• §6.2 Carcinogenicity: OECD TG 451, 453; OPPTS 870.4200, 870.4300; NTP 2-Year Study Protocol.
• §6.3 Genetic toxicity: OECD TG 471 / OPPTS 870.5100 (bacterial reverse mutation, Ames); OECD TG 473 / OPPTS 870.5375 (in-vitro mammalian chromosome aberration); OECD TG 474 / OPPTS 870.5395 (mammalian erythrocyte micronucleus); OECD TG 475 / OPPTS 870.5385 (mammalian bone-marrow chromosome aberration); OECD TG 476 / OPPTS 870.5300 (in-vitro mammalian cell gene mutation); OECD TG 483 / OPPTS 870.5380 (mammalian spermatogonial chromosome aberration); OECD TG 486 (UDS in vivo) as supplementary only. Multiple acceptable test methods must be used in conjunction per GHS [17].
• §6.4 Neurotoxicity: OECD TG 424; OPPTS 870.6200; additionally OECD TG 426 and OPPTS 870.6300 (developmental neurotoxicity).
• §6.5 Repeated dose toxicity, preferred: OECD TG 408, 409, 411, 413; OPPTS 870.3100, 870.3150, 870.3250, 870.3465. Acceptable: OECD TG 407, 410, 412, 422; OPPTS 870.3050, 870.3200.
• §6.6 Reproductive and developmental toxicity, preferred fertility: OECD TG 415, 416. Acceptable fertility: OPPTS 870.3800; OECD TG 421, 422; OPPTS 870.3550, 870.3650. Preferred developmental: OECD TG 414. Acceptable developmental: OPPTS 870.3800; OECD TG 421, 422; OPPTS 870.3550, 870.3650.
• §6.7 Skin sensitization: OECD TG 406, 429; OPPTS 870.2600.
• §6.8.1 Acute aquatic toxicity: baseline data set required in algae, aquatic invertebrates, and fish. Preferred fish: OECD TG 203; OPPTS 850.1075. Preferred invertebrates: OECD TG 202 Part 1 (Daphnia); OPPTS 850.1010 (daphnids); OPPTS 850.1035 (mysid). Preferred algae: OECD TG 201; OPPTS 850.4500. Alternatives include OPPTS 850.1085 (humic-acid-mitigated fish), 850.1025 (oyster), 850.1045 (penaeid), 850.1055 (bivalve), 850.4400 (Lemna).
• §6.8.2 Persistence (biodegradation): experimental methods preferred over estimations. Preferred: OECD TG 301 (sections A-F); OECD TG 310 (CO2 in sealed vessels); OPPTS 835.3110 (ready biodegradability). For chemicals where acute aquatic toxicity ≥ 100 ppm (Table 12 row 4), more-than-40 % degradation in 28 days in a Ready Biodegradability test, or more-than-60 % in an Inherent Biodegradability test under OECD TG 302 (A-C) per Aronson et al. 2006 (Chemosphere 63(11):1953-1960), implies half-life likely less than 60 days. Simulation tests (OECD TG 303A, 309, 314; OPPTS 835.3240, 835.3190, 835.3280, 835.3170, 835.3180) may also be used.
• §6.8.3 Bioaccumulation: field-measured BAF (in the literature) is most preferred; alternatives OECD TG 305 (flow-through fish test); OPPTS 850.1710 (oyster BCF); OPPTS 850.1730 (fish BCF); modelled data from EPI Suite acceptable when measured data are unavailable.

Per §6 introduction (p. 23) and §5.2 of the Safer Choice and DfE Standard (2024) [1], EPA encourages minimising the use of new animal testing and use of New Approach Methodologies (NAMs) identified for use under TSCA Section 4(h)(2)(C); additional NAMs meeting EPA’s criteria for scientific reliability and relevance are considered case-by-case. Per §4.2 (p. 7), data preference order is (1) measured data on the specific chemical, (2) measured data from a suitable analog, (3) estimated data from appropriate models. Human data (e.g., Human Repeat Insult Patch Tests) are considered when available, subject to ethical-treatment review.

Speciation. Not addressed at the level of heavy-metal species. The criteria operate on the chemical identity per CAS number (§3.8, p. 4) and on attribute classifications attached to each CAS-numbered substance. Speciation distinctions (e.g., iAs vs tAs, MeHg vs tHg, Cr-VI vs total Cr) are implicit in the CAS-number-keyed authoritative lists (Prop 65, IARC, NTP, EU CLP Annex VI), not stated in the criteria text.

Basis. Not applicable; no concentrations are reported in this document. The §5.10 eutrophication cap (0.5 weight % phosphorus) is stated as “in the product as sold.”

Implications

• The document is the federal-government primary record for how the Safer Choice / DfE programmes evaluate chemical ingredients in household cleaning products (and the broader “Direct Release” product set named in §1.3). It anchors the regulatory-context layer of HMI’s household-cleaning-product matrix: any heavy-metal-bearing chemical (e.g., Pb pigments; Cd colourants; iAs compounds; Cr-VI catalysts) that carries a Prop 65 / IARC / NTP / EU CLP harmonised classification would, by operation of §5.2 / §5.3 / §5.6, fail the Safer Choice Criteria and could not be used in a Safer Choice-labelled product. The document does not quantify the threshold at which a heavy-metal contaminant in an otherwise-safer ingredient (e.g., trace Pb in a colourant or trace Cd in a phosphate salt) becomes a failing-criteria concern; that question is not in scope of this criteria document and would be addressed (if at all) under the chemical-component-level review framing of §1.1 (“Safer Choice evaluates every ingredient … and based on its key, distinguishing human health and environmental characteristics”).
• The §5.10 eutrophication cap (total phosphorus 0.5 weight % in the product as sold; no inorganic-phosphate contribution to that 0.5 %) is the binding federal voluntary-programme limit on phosphorus in household cleaning products in the Safer Choice context. It sits alongside Canada’s SOR/2009-178 0.5 % phosphorus limit on household cleaning products (referenced in davidsuzuki2014-toxic-household-cleaners) as evidence of consistent North American voluntary / regulatory convergence on the 0.5 % phosphorus number for the household-cleaning-product matrix. Phosphorus is out of HMI’s heavy-metal scope, but the §5.10 clause is the part of the Safer Choice criteria that most closely resembles a quantitative concentration limit and is documented here for regulatory-context completeness.
• The document does not propose HMTc-relevant threshold values for any heavy metal. No threshold values are proposed by this source page.
• The 1996/1999/2005 EPA carcinogen-guideline references (Table 2, p. 10) and the 1986 Group A/B/C classifications remain in force in Safer Choice Master Criteria 2.1 alongside the newer IARC and EU CLP frameworks, demonstrating that the criteria are a layered superposition of authoritative classifications rather than a single unified hazard scheme. Any HMI synthesis touching authoritative-list status of a heavy-metal compound should preserve this layering rather than collapsing to one source.

Limitations

• No original measurements. The document is criteria-setting text, not an experimental or surveillance study. No sample sizes, no analytical methods (other than the test-method references in §6), no concentration values for any chemical, no detection frequencies.
• No heavy-metal enumeration. The criteria are generic across all ingredient chemistries. No specific heavy metal is named, no specific heavy-metal compound is named, no heavy-metal threshold (concentration) is given. The relevance to HMI is entirely indirect, via the authoritative lists (Prop 65, IARC, NTP, EU CLP, NIOSH) cross-referenced in §5.
• Programme is voluntary, not regulatory. Safer Choice and DfE are EPA-administered voluntary certification programmes, not regulations enforced under TSCA, CPSA, or any other statute. A chemical failing the Safer Choice Criteria is not, by that fact alone, prohibited in commerce; it is excluded from products bearing the Safer Choice label. The document is “primary record” for the programme criteria, not for any binding heavy-metal limit in US law.
• Functional-class criteria, not in this document. §1.1 (p. 2) notes that Safer Choice has developed “more customized criteria for specific functional classes of chemicals (e.g., surfactants, solvents, etc.)” that apply where they exist; the Master Criteria here is the residual / fallback set for chemicals not covered by a functional-class document. HMI sessions evaluating a Safer Choice-relevant ingredient need to check whether a functional-class criteria document is also in force.
• 2024 publication date; authoritative lists evolve. The references list (pp. 27-30) cites Prop 65 as accessed 2024 Sept 20, GHS chapters as 2023 United Nations, CLP Annex VI as accessed 2024 Sept 30, etc. Authoritative classifications change between the criteria document’s publication date and the date a HMI session reads it; downstream synthesis citing this document should re-check the live status of any specific compound classification.
• §3.21 inorganic-phosphate boundary is non-trivial. The §3.21 definition of “inorganic phosphate” excludes inorganic forms of phosphonic acid (H2PO3 or OP(=O)O) and explicitly carves out monopotassium phosphonic acid [CAS 13977-65-6]; chemists working at the phosphate/phosphonate boundary need to consult §3.21 carefully before applying the §5.10 cap.
• English-only, US jurisdiction. Document is in English and frames its criteria against US federal authorities (US EPA, NTP, NIOSH, OEHHA Prop 65) together with the international GHS framework and EU CLP. Other jurisdictions’ equivalent voluntary-eco-label programmes (e.g., EU Ecolabel, Nordic Swan, Green Seal) operate under their own criteria documents not addressed here.

Provenance

• Source PDF: raw/manual-fetch/Kimi_Agent_Download Corruption Issue/household_papers/06_Regulatory_EPA_GreenSeal/EPA_Safer_Choice_Master_Criteria_Ingredients.pdf
• SHA-256: 134d7ebb67a941a6931469c58efe568152a130a8cfaf94209b9baccbcbe9bf26
• File size: 430 KB; 31 pages (cover with Safer Choice logo, ToC on p. 1, body §§1-6 on pp. 2-26, References [1]-[109] on pp. 27-30).
• Publisher: U.S. Environmental Protection Agency, Office of Pollution Prevention & Toxics (OPPT), Washington, DC.
• Programme home page: epa.gov/saferchoice (Safer Choice and Design for the Environment programmes).
• Document title (cover): “EPA’s Safer Choice Program — Master Criteria for Safer Ingredients.”
• Document version: 2.1.
• Publication month/year: October 2024.
• DOI: none assigned (federal-agency criteria document).
• License: U.S. Government Work (public domain under 17 USC § 105).
• Access date: 2026-06-03.
• Acquisition path: included in Kimi Agent Download Corruption Issue (KADC) folder household_papers/06_Regulatory_EPA_GreenSeal/, alongside other regulatory and voluntary-standards content (David Suzuki Foundation consumer-education article and other EPA / Green Seal references).

Wiki pages this source may touch

• all-purpose-cleaners — household-cleaning-product within Safer Choice scope. Broad product context.
• appliance-cleaners — household-cleaning-product within Safer Choice scope. Broad product context.
• automatic-dishwasher-detergents — within scope. Broad product context.
• bathroom-tub-tile-cleaners — within scope. Broad product context.
• carpet-cleaners — within scope. Broad product context.
• dish-soaps-manual — within scope. Broad product context.
• drain-maintainers-cleaners — within scope. Broad product context.
• floor-cleaners-hard-surface — within scope. Broad product context.
• household-specialty-cleaners-other — catch-all for cleaning products not in a more specific category (e.g., graffiti removers, marine cleaners named in §1.3 as Direct Release products that must additionally pass §5.9 environmental criteria). Broad product context.
• kitchen-countertop-cleaners — within scope. Broad product context.
• laundry-detergents — within scope. Broad product context.
• laundry-detergent-boosters-additives — within scope. Broad product context.
• laundry-prewash-products — within scope. Broad product context.
• oven-grill-bbq-cleaners — within scope. Broad product context.
• pre-treaters-stain-removers — within scope. Broad product context.
• toilet-bowl-cleaners — within scope. Broad product context.
• window-glass-mirror-cleaners — within scope. Broad product context.

Verification notes

• Identity-check results (DOI null / raw_handle KADC_epa-safer-choice-master-criteria-ingredients / cite-key epa2024-safer-choice-master-criteria-ingredients) on 2026-06-03 returned no matching wiki source page; ingested as NEW.
• SHA-256 of the source PDF was computed from disk on 2026-06-03 (134d7ebb67a941a6931469c58efe568152a130a8cfaf94209b9baccbcbe9bf26).
• The document has no DOI (federal-agency criteria document, not a journal article). doi is null.
• Evidence tier set to A on the basis of: (i) authoritative federal-agency primary record from US EPA OPPT, the office that administers Safer Choice and DfE; (ii) versioned (V2.1) and dated (October 2024) criteria text; (iii) full references list (pp. 27-30; 109 numbered citations); (iv) document is the primary source of its own assertions (no secondary-source dependence for the criteria themselves); (v) published openly via the epa.gov/saferchoice programme web presence.
• License set to “U.S. Government Work (public domain, 17 USC § 105)” because the document is authored by a federal agency in the course of official duties; per 17 USC § 105 such works are not subject to copyright in the United States.
• Source type set to gov-guidance rather than gov-regulation because Safer Choice and DfE are voluntary certification programmes administered by EPA, not statutory regulations under TSCA or any other US law. A chemical failing the Master Criteria is excluded from Safer Choice / DfE-labelled products but is not, by that fact, prohibited in commerce.
• metals: [] is intentional: the document does not measure or enumerate any specific heavy metal. The HMI relevance is indirect (via Prop 65, IARC, NTP, EU CLP, NIOSH cross-references in §5) and is documented in the body prose, not via frontmatter routing. Putting a metal list in the frontmatter would mis-route this source onto metal pages where it has no quantitative content to contribute.
• ingredients: [] is intentional: the document is generic criteria, not specific to any one ingredient. The §3.21 inorganic-phosphate boundary and the §3.20 “an ingredient may be one chemical or a blend of multiple chemicals that are intentionally added” definitions are general framing, not specific-ingredient claims.
• products: [...] lists every household-cleaning-product taxonomy slug currently in wiki/products/ that is within Safer Choice / DfE scope per §1.3 (the programme covers cleaning and detergent products broadly; Direct Release products such as graffiti removers and marine cleaners — §1.3 examples — are caught by household-specialty-cleaners-other). Routing fan-out is broad_product_context, not direct_evidence, because no contamination values are reported.
• matrices: [household-cleaning-product] matches the matrix already in use on davidsuzuki2014-toxic-household-cleaners and ecetoc1992-tr045-ni-co-cr-consumer-products.
• jurisdictions: [US] because the document is the federal-government criteria text from US EPA. The criteria cross-reference EU CLP and GHS (international) but the criteria document itself is the US-jurisdictional primary record.
• Wiki/HMTc firewall (Part 2): the document is upstream of any HMTc threshold-setting work; no Part 2 drift risk in the body of this page. The Implications section does not propose HMTc thresholds.
• Brand firewall (Part 12): the document does not name any brand of cleaning product. No brand-firewall action required.
• The §5.10 eutrophication cap (0.5 weight % phosphorus; no inorganic-phosphate contribution) is documented as the closest the criteria come to a quantitative concentration limit; phosphorus is out of HMI heavy-metal scope and the cap is recorded here for regulatory-context completeness rather than as a heavy-metal threshold.
• The document references CAS 13977-65-6 (monopotassium phosphonic acid) once, in §3.21. This is the only CAS number cited in the document. It is not a heavy-metal compound; no ingredient page is touched.
• Quantitative content in this page (Tables 1a, 2, 3, 4, 5a, 5b, 6a, 6b, 7, 8, 12) is reproduced exactly from the source PDF (Version 2.1, October 2024) with page locators throughout.
• No new ingredient pages and no new product pages were created during this ingest, per CLAUDE.md Part 10 and the skill’s hard constraints. The product list in frontmatter draws only on existing wiki/products/ slugs.
• No new regulation page was created. If a regulations/epa-safer-choice-master-criteria.md page is ever needed (Step 0 Lock decision), it would inherit from this source and the broader Safer Choice / DfE Standard document referenced as [1] (USEPA, EPA’s Safer Choice and Design for the Environment (DfE) Standard. 2024). That Standard document is not in the present KADC PDF set.

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.