# 1,1-Dichloropropane — US federal chemical regulatory reporting thresholds by program (CERCLA, EPCRA, CAA) For 1,1-Dichloropropane, cas no. is 78-99-9; cercla rq (lbs) is 1000; regulatory categories is 1,2, verified against its source on 2026-08-05. - **Substance:** 1,1-Dichloropropane _(verified: appears in the quote below)_ - **CAS No.:** 78-99-9 _(verified: appears in the quote below)_ - **CERCLA RQ (lbs):** 1000 _(verified: appears in the quote below)_ - **Regulatory categories:** 1,2 _(verified: appears in the quote below)_ ## What the source says > 1,1-Dichloropropane | 78-99-9 | 1,2 | | 1000 (454) ## 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/).