---
type: threshold
id: boron-tribromide
asset: workplace-exposure-limits
title: "Boron tribromide — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
sources:
  - https://www.dir.ca.gov/title8/5155.html
source_quote: "10294334 | | Boron tribromide | 1 | 10 | C"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Boron tribromide"
pel_ppm: "1"
pel_mgm3: "10"
ceiling: "C"
verified: true
---
**Substance:** Boron tribromide

**PEL (ppm):** 1

**PEL (mg/m³):** 10

**Ceiling:** C

> 10294334 | | Boron tribromide | 1 | 10 | C

Source: <https://www.dir.ca.gov/title8/5155.html>