# Trimethyltin Chloride — US federal chemical regulatory reporting thresholds by program (CERCLA, EPCRA, CAA) For Trimethyltin Chloride, cas no. is 1066-45-1; epcra tpq (lbs) is 500/10,000; epcra rq (lbs) is 500, verified against its source on 2026-08-05. - **Substance:** Trimethyltin Chloride _(verified: appears in the quote below)_ - **CAS No.:** 1066-45-1 _(verified: appears in the quote below)_ - **EPCRA TPQ (lbs):** 500/10,000 _(verified: appears in the quote below)_ - **EPCRA RQ (lbs):** 500 _(verified: appears in the quote below)_ ## What the source says > 1066-45-1 | Trimethyltin Chloride | | 500 | 500/10,000 | ## Source - https://www.ecfr.gov/current/title-40/chapter-I/subchapter-J/part-355 Last verified: 2026-08-05. Review by: 2027-08-05. Part of [US federal chemical regulatory reporting thresholds by program (CERCLA, EPCRA, CAA)](https://referencesource.org/chemical-regulatory-reporting-thresholds/).