Hydrogen — workplace exposure limit

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

For Hydrogen, cas no. is 1333740, verified against its source on 2026-08-05.

1333740 | | Hydrogen | (h) | --

— dir.ca.gov, retrieved 2026-08-05

Substance: Hydrogen verified
CAS No.: 1333740 verified

Sourcedir.ca.gov

Verified2026-08-05

Review by2027-08-05

DatasetUS workplace chemical exposure limits: federal OSHA, Cal/OSHA and NIOSH, side by side

Source

dir.ca.govhttps://www.dir.ca.gov/title8/5155.html

Last verified against source: 2026-08-05. Due for re-check by 2027-08-05. 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.