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

For Isopropyl ether, cas no. is 108-20-3; pel (ppm) is 500; pel (mg/m³) is 2100, verified against its source on 2026-08-05.

- **Substance:** Isopropyl ether
- **CAS No.:** 108-20-3
- **PEL (ppm):** 500
- **PEL (mg/m³):** 2100

## What the source says

> Isopropyl ether | 108-20-3 | 500 | 2100 | - |

## 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/).