# Benzeneacetic acid, 4-chloro-α-(4-chlorophenyl)-α-hydroxy-, ethyl ester — US federal chemical regulatory reporting thresholds by program (CERCLA, EPCRA, CAA) For Benzeneacetic acid, 4-chloro-α-(4-chlorophenyl)-α-hydroxy-, ethyl ester, cas no. is 510-15-6; cercla rq (lbs) is 10; rcra waste number is U038; regulatory categories is 3,4, verified against its source on 2026-08-05. - **Substance:** Benzeneacetic acid, 4-chloro-α-(4-chlorophenyl)-α-hydroxy-, ethyl ester _(verified: appears in the quote below)_ - **CAS No.:** 510-15-6 _(verified: appears in the quote below)_ - **CERCLA RQ (lbs):** 10 _(verified: appears in the quote below)_ - **RCRA waste number:** U038 _(verified: appears in the quote below)_ - **Regulatory categories:** 3,4 _(verified: appears in the quote below)_ ## What the source says > Benzeneacetic acid, 4-chloro-α-(4-chlorophenyl)-α-hydroxy-, ethyl ester | 510-15-6 | 3,4 | U038 | 10 (4.54) ## 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/).