---
type: threshold
id: pentaborane
asset: workplace-exposure-limits
title: "Pentaborane — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
sources:
  - https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
source_quote: "Pentaborane | 19624-22-7 | 0.005 | 0.01 | - |"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Pentaborane"
cas_number: "19624-22-7"
pel_ppm: "0.005"
pel_mgm3: "0.01"
verified: true
---
**Substance:** Pentaborane

**CAS No.:** 19624-22-7

**PEL (ppm):** 0.005

**PEL (mg/m³):** 0.01

> Pentaborane | 19624-22-7 | 0.005 | 0.01 | - |

Source: <https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1>