Reference Source

Magnesium oxide fume — workplace exposure limit

What is the cas no. for Magnesium oxide fume — workplace exposure limit?

For Magnesium oxide fume, cas no. is 1309-48-4, verified against its source on 2026-08-05.

Magnesium oxide fume | 1309-48-4 | - | - | - |

osha.gov, retrieved 2026-08-05

Substance
Magnesium oxide fume verified
CAS No.
1309-48-4 verified
NIOSH REL, as stated
See Appendix D per cdc.gov
PEL (mg/m³)
10 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 See Appendix D

cdc.gov, retrieved 2026-09-08

What dir.ca.gov says

1309484 | | Magnesium oxide fume, as Mg | -- | 10

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.