Beryllium, and beryllium compounds — CAS 7440417 — workplace exposure limit
What is the pel (mg/m³) for Beryllium, and beryllium compounds — CAS 7440417 — workplace exposure limit?
For Beryllium, and beryllium compounds, pel (mg/m³) is 0.0002; ceiling is 0.025mg/M3; ceiling notation is a ceiling value in addition to the TWA values; stel (mg/m³) is 0.002; cas no. is 7440417, verified against its source on 2026-09-29.
7440417 | | Beryllium, and beryllium compounds | -- | 0.0002 | 0.025mg/M3 | -- | 0.002
— dir.ca.gov, retrieved 2026-09-28
- Substance
- Beryllium, and beryllium compounds verified
- CAS No.
- 7440417 verified
- PEL (mg/m³)
- 0.0002 verified
- Ceiling
- 0.025mg/M3 verified
- Ceiling notation
- a ceiling value in addition to the TWA values verified
- STEL (mg/m³)
- 0.002 verified
- NIOSH REL, as stated
- Ca See Appendix A per cdc.gov
Where each value comes from
The value above is stated away from the sentence quoted with the answer, so the passage that states it is shown here too.
Ceiling notation
A numerical entry in this column represents a ceiling value in addition to the TWA values.
— all from dir.ca.gov, retrieved 2026-09-28
What osha.gov says
Beryllium and beryllium compounds (as Be); see 1926.1124 8 | 7440-41-7 | - | - | - |
— osha.gov, retrieved 2026-08-05
What cdc.gov says
NIOSH REL Ca See Appendix A
— cdc.gov, retrieved 2026-09-08
Substance
CDC - NIOSH Pocket Guide to Chemical Hazards - Beryllium & beryllium compounds (as Be)
CAS No.
CAS No. 7440-41-7 (metal)
Sources
- dir.ca.govhttps://www.dir.ca.gov/title8/5155.html
- osha.govhttps://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
- cdc.govhttps://www.cdc.gov/niosh/npg/npgd0054.html