California’s Office of Environmental Health Hazard Assessment (OEHHA) has added Para-chlorobenzotrifluoride (PCBTF) to its list of carcinogens under Proposition 65. also add para-chlorobenzotrifluoride (PCBTF), a solvent to the Proposition 65 list of carcinogens.
Companies using any of approximately 900 substances listed under Prop 65 are required to provide warnings to Californians that using their products may possibly expose them to the chemicals identified as carcinogens or toxic to the reproductive system.
In its notice of intent, to list the OEHHA announced that it’s taking the steps to list PCBTF based on the ‘authoritative bodies’ mechanism after a 2018 National Toxicology Program (NTP) reported “clear evidence” of PCBTF’s carcinogenicity.
The NTP’s report on PCBTF’s carcinogenicity was titled “Toxicology and Carcinogenesis Studies of p‑Chloro‑α,α,α‑Trifluorotoluene in Sprague Dawley Rats.” The reported findings met the sufficiency of the evidence and formal identification criteria required to be added to the Prop 65 list. PCBTF is also used as a solvent in inks, coatings, and paints.
The use of PCBTF is important for manufacturers in California because its contribution to ground-level ozone formation is insignificant which makes PCBTF an approved alternative solvent that meets the strict requirements for volatile organic compound (VOC) emissions.
The public comments period on the PCBTF proposal was initially set to end on December 24, 2018, but the American Coatings Association (ACA) requested an extension. California’s Office of Environmental Health Hazard Assessment (OEHHA) agreed to extend the public comment period until January 23, 2019.
PCBTF was listed as a Proposition 65 carcinogen on June 28, 2019. The effective date of the listing is the same as the listing date. The enforcement date for (PCBTF) will take effect on June 28, 2020.
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