Calcium carbonate — workplace exposure limit
What is the niosh rel, as stated for Calcium carbonate — workplace exposure limit?
For Calcium carbonate, niosh rel, as stated is TWA 10 mg/m3 (total) TWA 5 mg/m3 (resp); cas no. is 471-34-1 (synthetic) 1317-65-3 (natural), verified against its source on 2026-09-08.
NIOSH REL TWA 10 mg/m3 (total) TWA 5 mg/m3 (resp)
— cdc.gov, retrieved 2026-09-08
- Substance
- Calcium carbonate verified
- CAS No.
- 471-34-1 (synthetic) 1317-65-3 (natural) verified
- NIOSH REL, as stated
- TWA 10 mg/m3 (total) TWA 5 mg/m3 (resp) verified
Where each value comes from
This source states these in separate places, so each value is shown with the passage that states it.
Substance
CDC - NIOSH Pocket Guide to Chemical Hazards - Calcium carbonate
CAS No.
CAS No. 471-34-1 (synthetic) 1317-65-3 (natural)
— all from cdc.gov, retrieved 2026-09-08
Source
- cdc.govhttps://www.cdc.gov/niosh/npg/npgd0090.html