# Sarin — US federal chemical regulatory reporting thresholds by program (CERCLA, EPCRA, CAA) For Sarin, cas no. is 107-44-8; epcra tpq (lbs) is 10; epcra rq (lbs) is 10, verified against its source on 2026-08-05. - **Substance:** Sarin _(verified: appears in the quote below)_ - **CAS No.:** 107-44-8 _(verified: appears in the quote below)_ - **EPCRA TPQ (lbs):** 10 _(verified: appears in the quote below)_ - **EPCRA RQ (lbs):** 10 _(verified: appears in the quote below)_ ## What the source says > 107-44-8 | Sarin | d | 10 | ## 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/).