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

For Ethyl ether, cas no. is 60-29-7; pel (ppm) is 400; pel (mg/m³) is 1200, verified against its source on 2026-08-05.

- **Substance:** Ethyl ether
- **CAS No.:** 60-29-7
- **PEL (ppm):** 400
- **PEL (mg/m³):** 1200

## What the source says

> Ethyl ether | 60-29-7 | 400 | 1200 | - |

## Sources disagree

More than one authority states this, and they do not state the same
thing. Both are reproduced with the source each came from.

### PEL (mg/m³)

osha.gov says pel (mg/m³) is **1200**, as of 2026-08-05.

> Ethyl ether | 60-29-7 | 400 | 1200 | - |

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

dir.ca.gov says pel (mg/m³) is **1,200**, as of 2026-08-05.

> 60297 | | Ethyl ether | 400 | 1,200 | | 500 | 1500

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


## Source

- https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
- https://www.dir.ca.gov/title8/5155.html

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/).