EPA Announces Next Step In TSCA Review Of Five Chemicals

The U.S. Environmental Protection Agency (EPA) announced on June 17, 2026, that it is advancing its review of five chemicals under the Toxic Substances Control Act (TSCA) — 1,1,2-trichloroethane; 4,4′-(1-methylethylidene)bis[2,6-dibromophenol] (TBBPA); 1,2-dichloropropane; ethylene dibromide; and trans-1,2-dichloroethylene — by sending the underlying science to the Science Advisory Committee on Chemicals (SACC) for peer review and opening it for public comment. EPA states that “[t]hese chemicals appear in flame retardants, cleaning and degreasing products, leaded aviation gasoline, laboratories, and industrial processes, so EPA’s conclusions can directly affect the air Americans breathe at home, at work, and in their communities.” EPA released technical support documents supporting the draft risk evaluations for four of these chemicals on June 17, 2026. As reported in our June 17, 2026, memorandum, EPA released the draft risk evaluation and supporting documents for TBBPA on June 12,