# Butyric acid — US federal chemical regulatory reporting thresholds by program (CERCLA, EPCRA, CAA) For Butyric acid, cas no. is 107-92-6; cercla rq (lbs) is 5000; regulatory categories is 1, verified against its source on 2026-08-05. - **Substance:** Butyric acid _(verified: appears in the quote below)_ - **CAS No.:** 107-92-6 _(verified: appears in the quote below)_ - **CERCLA RQ (lbs):** 5000 _(verified: appears in the quote below)_ - **Regulatory categories:** 1 _(verified: appears in the quote below)_ ## What the source says > Butyric acid | 107-92-6 | 1 | | 5000 (2270) ## Source - https://www.ecfr.gov/current/title-40/chapter-I/subchapter-J/part-302/section-302.4 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/).