# Propanoic acid, 2-(2,4,5-trichlorophenoxy)- — US federal chemical regulatory reporting thresholds by program (CERCLA, EPCRA, CAA) For Propanoic acid, 2-(2,4,5-trichlorophenoxy)-, cas no. is 93-72-1; cercla rq (lbs) is 100; rcra waste number is See F027; regulatory categories is 1,4, verified against its source on 2026-08-05. - **Substance:** Propanoic acid, 2-(2,4,5-trichlorophenoxy)- _(verified: appears in the quote below)_ - **CAS No.:** 93-72-1 _(verified: appears in the quote below)_ - **CERCLA RQ (lbs):** 100 _(verified: appears in the quote below)_ - **RCRA waste number:** See F027 _(verified: appears in the quote below)_ - **Regulatory categories:** 1,4 _(verified: appears in the quote below)_ ## What the source says > Propanoic acid, 2-(2,4,5-trichlorophenoxy)- | 93-72-1 | 1,4 | See F027 | 100 (45.4) ## 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/).