# Thallium (I) acetate — US federal chemical regulatory reporting thresholds by program (CERCLA, EPCRA, CAA) For Thallium (I) acetate, cas no. is 563-68-8; cercla rq (lbs) is 100; rcra waste number is U214; regulatory categories is 4, verified against its source on 2026-08-05. - **Substance:** Thallium (I) acetate _(verified: appears in the quote below)_ - **CAS No.:** 563-68-8 _(verified: appears in the quote below)_ - **CERCLA RQ (lbs):** 100 _(verified: appears in the quote below)_ - **RCRA waste number:** U214 _(verified: appears in the quote below)_ - **Regulatory categories:** 4 _(verified: appears in the quote below)_ ## What the source says > Thallium (I) acetate | 563-68-8 | 4 | U214 | 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/).