# Iron, Pentacarbonyl- — US federal chemical regulatory reporting thresholds by program (CERCLA, EPCRA, CAA) For Iron, Pentacarbonyl-, cas no. is 13463-40-6; epcra tpq (lbs) is 100; epcra rq (lbs) is 100, verified against its source on 2026-08-05. - **Substance:** Iron, Pentacarbonyl- _(verified: appears in the quote below)_ - **CAS No.:** 13463-40-6 _(verified: appears in the quote below)_ - **EPCRA TPQ (lbs):** 100 _(verified: appears in the quote below)_ - **EPCRA RQ (lbs):** 100 _(verified: appears in the quote below)_ ## What the source says > 13463-40-6 | Iron, Pentacarbonyl- | | 100 | ## Source - https://www.ecfr.gov/current/title-40/chapter-I/subchapter-J/part-355 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/).