# L.P.G. — workplace exposure limit

For L.P.G., niosh rel (ppm) is TWA 1000; niosh rel (mg/m³) is 1800; cas no. is 68476-85-7, verified against its source on 2026-09-08.

- **Substance:** L.P.G. _(verified: appears in its own passage below)_
- **CAS No.:** 68476-85-7 _(verified: appears in its own passage below)_
- **NIOSH REL (ppm):** TWA 1000 _(verified: appears in the quote below)_
- **NIOSH REL (mg/m³):** 1800 _(verified: appears in the quote below)_
- **PEL (ppm):** 1000 _(per osha.gov, not stated by the source above)_
- **PEL (mg/m³):** 1800 _(per osha.gov, not stated by the source above)_

## What the source says

> NIOSH REL TWA 1000 ppm (1800 mg/m3)

## 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 - L.P.G.

### CAS No.

> CAS No. 68476-85-7

## What osha.gov says

> L.P.G. (Liquefied petroleum gas) | 68476-85-7 | 1000 | 1800 | - |

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

## Source

- https://www.cdc.gov/niosh/npg/npgd0679.html
- https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1

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/).