Reference Source

Hydrogen sulfide — workplace exposure limit

What is the cas no. for Hydrogen sulfide — workplace exposure limit?

For Hydrogen sulfide, cas no. is 7783-06-4, verified against its source on 2026-08-05.

Hydrogen sulfide | 7783-06-4 | - | (2) | - |

— osha.gov, retrieved 2026-08-05

Substance
Hydrogen sulfide verified
CAS No.
7783-06-4 verified
PEL (ppm)
10 per dir.ca.gov
PEL (mg/m³)
14 per dir.ca.gov
Ceiling
50 ppm per dir.ca.gov
STEL (ppm)
15 per dir.ca.gov
STEL (mg/m³)
21 per dir.ca.gov
NIOSH REL (ppm)
C 10 per cdc.gov
NIOSH REL (mg/m³)
15 per cdc.gov
Sourceosha.gov
Verified
Review by
DatasetUS workplace chemical exposure limits: federal OSHA, Cal/OSHA and NIOSH, side by side

What dir.ca.gov says

7783064 | | Hydrogen sulfide | 10 | 14 | 50 ppm | 15 | 21

— dir.ca.gov, retrieved 2026-08-05

What cdc.gov says

NIOSH REL C 10 ppm (15 mg/m3) [10-minute]

— cdc.gov, retrieved 2026-09-08

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.

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