# Styrene — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side

For Styrene, cas no. is 100-42-5, verified against its source on 2026-08-05.

- **Substance:** Styrene
- **CAS No.:** 100-42-5

## What the source says

> Styrene | 100-42-5 | - | ( 2 ) | - |

## Source

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

Last verified: 2026-08-05. Review by: 2027-08-05.
Part of [US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side](https://referencesource.org/workplace-exposure-limits/).