---
type: threshold
id: beta-chloroprene
asset: workplace-exposure-limits
title: "beta-Chloroprene — 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: "beta-Chloroprene | 126-99-8 | 25 | 90 | X |"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "beta-Chloroprene"
cas_number: "126-99-8"
pel_ppm: "25"
pel_mgm3: "90"
verified: true
---
**Substance:** beta-Chloroprene

**CAS No.:** 126-99-8

**PEL (ppm):** 25

**PEL (mg/m³):** 90

> beta-Chloroprene | 126-99-8 | 25 | 90 | X |

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