Mica (containing less than 1% quartz) — workplace exposure limit

What is the niosh rel, as stated for Mica (containing less than 1% quartz) — workplace exposure limit?

For Mica (containing less than 1% quartz), niosh rel, as stated is TWA 3 mg/m3 (resp); cas no. is 12001-26-2, verified against its source on 2026-09-08.

NIOSH REL TWA 3 mg/m3 (resp)

— cdc.gov, retrieved 2026-09-08

Substance: Mica (containing less than 1% quartz) verified
CAS No.: 12001-26-2 verified
NIOSH REL, as stated: TWA 3 mg/m3 (resp) verified
PEL (mg/m³): 3 per dir.ca.gov

Sourcecdc.gov

Verified2026-09-08

Review by2027-08-05

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

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 - Mica (containing less than 1% quartz)

CAS No.

CAS No. 12001-26-2

— all from cdc.gov, retrieved 2026-09-08

What osha.gov says

Mica (respirable dust) | 12001-26-2 | - | (3) | - |

— osha.gov, retrieved 2026-08-05

What dir.ca.gov says

12001262 | | Mica (respirable dust) | -- | 3

— dir.ca.gov, retrieved 2026-08-05

Sources

cdc.govhttps://www.cdc.gov/niosh/npg/npgd0431.html
osha.govhttps://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
dir.ca.govhttps://www.dir.ca.gov/title8/5155.html

Last verified against source: 2026-09-08. 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.