Last month the United States Environmental Protection Agency (EPA) released a list of 20 chemical substances that they proposed be designated as High Priority Substances. The list, which was released as required under the Toxic Substances Control Act (TSCA), is comprised of the following substances, including several cosmetic ingredients:
3. trans-1,2- Dichloroethylene
8. Dibutyl phthalate (DBP) (1,2-Benzene- dicarboxylic acid, 1,2- dibutyl ester)
9. Butyl benzyl phthalate (BBP) – 1,2-Benzene- dicarboxylic acid, 1- butyl 2(phenylmethyl) ester
10. Di-ethylhexyl phthalate (DEHP) – (1,2-Benzene- dicarboxylic acid, 1,2- bis(2-ethylhexyl) ester)
11. Di-isobutyl phthalate (DIBP) – (1,2-Benzene- dicarboxylic acid, 1,2- bis-(2methylpropyl) ester)
12. Dicyclohexyl phthalate
13. 4,4′-(1-Methylethylidene)bis[2, 6-dibromophenol] (TBBPA)
14. Tris(2-chloroethyl) phosphate (TCEP)
15. Phosphoric acid, triphenyl ester (TPP)
16. Ethylene dibromide
18. 1,3,4,6,7,8-Hexahydro-4,6,6,7,8,8-hexamethylcyclopenta [g]-2-benzopyran (HHCB)
20. Phthalic anhydride
With respect to this proposal, a High-Priority Substance is defined as “a chemical substance that EPA determines, without consideration of costs or other non-risk factors, may present an unreasonable risk of injury to health or the environment because of a potential hazard and a potential route of exposure under the conditions of use, including an unreasonable risk to potentially exposed or susceptible subpopulations identified as relevant by EPA”. It is important to note that the EPA has explicitly stated proposing a chemical substance be classified as High-Priority “is not a finding of unreasonable risk”, but rather, once the final ruling on the High-Priority Substance list is released, the chemical substances will then undergo a complete risk evaluation and a determination on their risk will be made.
The proposal is currently open for a comment period, where any interested party, including members of the general public, can submit comments on the list up until November 21, 2019. The EPA also released a corresponding list to this that outlined 20 chemical substance they proposed to be designated as Low-Priority Substances. Comments are being accepted on this proposal until November 13, 2019. For more
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