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On August 10, 2026, the U.S. Environmental Protection Agency (EPA) announced the availability of and requested public comment on the draft risk evaluations under the Toxic Substances Control Act (TSCA) for o-dichlorobenzene (oDCB) and p-dichlorobenzene (pDCB). 91 Fed. Reg. 51488. EPA notes that the purpose of TSCA risk evaluations is to determine whether a chemical substance presents an unreasonable risk of injury to health or the environment under the conditions of use (COU),...

The U.S. Environmental Protection Agency (EPA) announced on April 10, 2026, that it is advancing its review of four chemicals under the Toxic Substances Control Act (TSCA) -- 1,3,4,6,7,8-Hexahydro-4,6,6,7,8,8-hexamethylcyclopenta [g]-2-benzopyran (HHCB), phthalic anhydride, o-dichlorobenzene (oDCB), and p-dichlorobenzene (pDCB) -- by releasing draft documents related to the review of these chemicals and convening a Science Advisory Committee on Chemicals (SACC) peer review meeting. According to...