# Tellurium Hexafluoride — US federal chemical regulatory reporting thresholds by program (CERCLA, EPCRA, CAA) For Tellurium Hexafluoride, cas no. is 7783-80-4; epcra tpq (lbs) is 100; epcra rq (lbs) is 100, verified against its source on 2026-08-05. - **Substance:** Tellurium Hexafluoride _(verified: appears in the quote below)_ - **CAS No.:** 7783-80-4 _(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 > 7783-80-4 | Tellurium Hexafluoride | e | 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/).