Literature scope
No sources are catalogued for this category yet.
Why this category exists
Cannabis is a documented hyperaccumulator: it is used in soil phytoremediation precisely because it concentrates lead, cadmium, and nickel, and any product derived from the flower can carry that load forward, with concentrates and vape oils concentrating it further. Vape hardware adds a second, mechanically distinct route: the heating coil leaches lead, nickel, and chromium into inhaled aerosol. The market is large and has no incumbent third-party heavy-metal trust mark.
Pathway note
This category spans three exposure routes. Flower and vape products are inhaled; edibles and tinctures are ingested; topicals are dermal. Whether vape hardware is treated per-category or under one shared inhalable-hardware treatment alongside any future nicotine-vape category is a reserved decision recorded in docs/governance/taxonomy-reorganization-2026-06 §4.
Boundary rules
CBD and hemp-derived ingestibles route here even when carrying a Supplement Facts panel, because FDA does not recognize CBD as a lawful dietary-supplement ingredient, so they are legally distinct from Category 16. Hemp seed and hemp oil sold as conventional food, with no cannabinoid actives marketed, route to Category 4 or Category 7. Cannabis products marketed for animals route to the Pet domain.
Sources
Update history
The five most recent substantive edits to this page, classified major (evidence or structure moved), correction (a published value or statement was wrong and has been fixed), or minor (narrative rewritten without changing the underlying evidence). Each description is derived from what the edit did to this page; the linked commit is the authoritative record, routine regeneration passes are excluded, and 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.