# n-Butyl glycidyl ether — workplace exposure limit

For n-Butyl glycidyl ether, niosh rel (ppm) is C 5.6; niosh rel (mg/m³) is 30; cas no. is 2426-08-6, verified against its source on 2026-09-08.

- **Substance:** n-Butyl glycidyl ether _(verified: appears in its own passage below)_
- **CAS No.:** 2426-08-6 _(verified: appears in its own passage below)_
- **NIOSH REL (ppm):** C 5.6 _(verified: appears in the quote below)_
- **NIOSH REL (mg/m³):** 30 _(verified: appears in the quote below)_
- **PEL (ppm):** 50 _(per osha.gov, not stated by the source above)_
- **PEL (mg/m³):** 270 _(per osha.gov, not stated by the source above)_

## What the source says

> NIOSH REL C 5.6 ppm (30 mg/m3) [15-minute]

## Where each value comes from

This source states these in separate places, so each value is shown with the passage that states it.

### Substance

> CDC - NIOSH Pocket Guide to Chemical Hazards - n-Butyl glycidyl ether

### CAS No.

> CAS No. 2426-08-6

## What osha.gov says

> n-Butyl glycidyl ether (BGE) | 2426-08-6 | 50 | 270 | - |

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

## What dir.ca.gov says

> 2426086 | | n-Butyl glycidyl ether; BGE; 1-butoxy-2,3-epoxypropane | 25 | 135

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

## Source

- https://www.cdc.gov/niosh/npg/npgd0081.html
- https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
- https://www.dir.ca.gov/title8/5155.html

Last verified: 2026-09-08. Review by: 2027-08-05.
Part of [US workplace chemical exposure limits: federal OSHA, Cal/OSHA and NIOSH, side by side](https://referencesource.org/workplace-exposure-limits/).