EPA releases draft TSCA risk evaluation materials for HHCB, phthalic anhydride, o-dichlorobenzene, and p-dichlorobenzene; SACC peer review meetings scheduled

EPA released draft TSCA risk evaluation and/or hazard assessment materials for HHCB, phthalic anhydride, o-dichlorobenzene (o-DCB), and p-dichlorobenzene (p-DCB), and announced TSCA Science Advisory Committee on Chemicals (SACC) peer review meeting dates (including a preparatory meeting on May 26, 2026 and a peer review meeting on June 8–12, 2026). Stakeholders should review the drafts and participate in the SACC/public docket process because draft conclusions (e.g., preliminary unreasonable-risk findings for certain chemicals/uses described by EPA) may inform subsequent TSCA Section 6 risk management actions.