Reference Source

Hydroquinone — workplace exposure limit

What is the pel (mg/m³) for Hydroquinone — workplace exposure limit?

For Hydroquinone, pel (mg/m³) is 2; cas no. is 123-31-9, verified against its source on 2026-08-05.

Hydroquinone | 123-31-9 | - | 2 | - |

osha.gov, retrieved 2026-08-05

Substance
Hydroquinone verified
CAS No.
123-31-9 verified
PEL (mg/m³)
2 verified
NIOSH REL (mg/m³)
C 2 per cdc.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 C 2 mg/m3 [15-minute]

cdc.gov, retrieved 2026-09-08

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.