# Dibutyl Peroxide (Tertiary) — OSHA PSM vs EPA RMP: chemical threshold quantities side by side For Dibutyl Peroxide (Tertiary), cas no. is 110-05-4; osha psm tq (lbs) is 5000, verified against its source on 2026-08-15. - **Substance:** Dibutyl Peroxide (Tertiary) _(verified: appears in the quote below)_ - **CAS No.:** 110-05-4 _(verified: appears in the quote below)_ - **OSHA PSM TQ (lbs):** 5000 _(verified: appears in the quote below)_ ## What the source says > Dibutyl Peroxide (Tertiary) | 110-05-4 | 5000 ## Source - https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.119AppA Last verified: 2026-08-15. Review by: 2027-08-15. Part of [OSHA PSM vs EPA RMP: chemical threshold quantities side by side](https://referencesource.org/psm-rmp-chemical-threshold-crossref/).