Reference Source

Sodium hydroxide — workplace exposure limit

What is the pel (mg/m³) for Sodium hydroxide — workplace exposure limit?

For Sodium hydroxide, pel (mg/m³) is 2; cas no. is 1310-73-2, verified against its source on 2026-08-05.

Sodium hydroxide | 1310-73-2 | - | 2 | - |

osha.gov, retrieved 2026-08-05

Substance
Sodium hydroxide verified
CAS No.
1310-73-2 verified
PEL (mg/m³)
2 verified
NIOSH REL (mg/m³)
C 2 per cdc.gov
Ceiling
C per dir.ca.gov
Sourceosha.gov
Verified
Review by
DatasetUS workplace chemical exposure limits: federal OSHA, Cal/OSHA and NIOSH, side by side

What cdc.gov says

NIOSH REL C 2 mg/m3

cdc.gov, retrieved 2026-09-08

What dir.ca.gov says

1310732 | | Sodium hydroxide; caustic soda | -- | 2 | C

dir.ca.gov, retrieved 2026-08-05

Sources

Last verified against source: . Due for re-check by . This page as Markdown · OKF bundle · full dataset as JSON.

What is the OSHA exposure limit for this substance?Find the exposure limit for a substance in workplace air — federal OSHA, California and NIOSH, side by side.