Hydrogen

For Hydrogen, cas no. is 1333-74-0; epa rmp tq (lbs) is 10,000; rmp category is flammable; rmp basis for listing is f, recorded from its source on 2026-08-15.

Substance: Hydrogen verified
CAS No.: 1333-74-0 verified
EPA RMP TQ (lbs): 10,000 verified
RMP category: flammable our reading
RMP basis for listing: f verified

Sourceecfr.gov

Verified2026-08-15

Review by2027-08-15

DatasetOSHA PSM vs EPA RMP: chemical threshold quantities side by side

Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.

What the source says

Hydrogen | 1333-74-0 | 10,000 | f

— ecfr.gov, retrieved 2026-08-15

Source

ecfr.govhttps://www.ecfr.gov/current/title-40/chapter-I/subchapter-C/part-68/subpart-F/section-68.130

Last verified against source: 2026-08-15. Due for re-check by 2027-08-15. This page as Markdown · OKF bundle · full dataset as JSON.