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California’s Identification and Ranking of Substances for Hazard Assessment under Proposition 65

Written by AIAG | Jul 28, 2021 1:31:14 PM

In March 2021, the OEHHA (Office of Environmental Health Hazard Assessment) selected for hazard assessment several per- and polyfluoroalkyl substances (PFAS) for review and possible listing. The chemicals are under review by two expert committees: the Carcinogen Identification Committee (CIC) and the DARTIC (Developmental and Reproductive Toxicant Identification Committee). 

Under evaluation as carcinogenic and/or reproductive hazards are PFOS and its salts and transformation and degradation precursors; PFDA and its salts; PFHxS and its salts; PFNA and its salts; and PFUnDA and its salts.

In a summary released this spring, OEHHA listed 22 substances reviewed and ranked by DARTIC from High Priority to No Priority for assessment. OEHHA has discretion to determine which if any will be considered for listing under Prop 65:

Chemical

Recommended Priority

Benzophenone 3

High priority

Bisphenol S (BPS)

High priority

Diazinon

High priority

Glyphosate and its salts

High priority

Perfluorodecanoic acid (PFDA)

High priority

Perfluorohexanesulfonic acid (PFHxS)

High priority

Perfluorononanoic acid (PFNA)

High priority

Imidacloprid

Medium/High priority

Acetamiprid

Medium priority

Butyl paraben

Medium priority

Clothianidin

Medium priority

Domoic acid

Medium priority

Manganese

Medium priority

Methyl paraben

Medium priority

Perfluorodecanoic acid (PFUnDA)

Medium priority

Titanium dioxide nanoparticles

Medium priority

Zearalenone

Medium priority

Thiamethoxam

Medium priority/No priority

Vinpocetine

Medium priority/No priority

Diethyl phthalate

No priority

Isobutyl paraben

No priority

Propyl paraben

No priority