Hydroquinone

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

What the source says

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

— osha.gov, retrieved 2026-08-05

Source

• osha.govhttps://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1

Last verified against source: 2026-08-05. Scheduled for re-check by: 2027-08-05. This page as Markdown · OKF concept · full dataset as JSON.