# p-Nitroaniline — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side

For p-Nitroaniline, cas no. is 100-01-6; pel (ppm) is 1; pel (mg/m³) is 6, verified against its source on 2026-08-05.

- **Substance:** p-Nitroaniline
- **CAS No.:** 100-01-6
- **PEL (ppm):** 1
- **PEL (mg/m³):** 6

## What the source says

> p-Nitroaniline | 100-01-6 | 1 | 6 | X |

## Sources disagree

More than one authority states this, and they do not state the same
thing. Both are reproduced with the source each came from.

### PEL (mg/m³)

osha.gov says pel (mg/m³) is **6**, as of 2026-08-05.

> p-Nitroaniline | 100-01-6 | 1 | 6 | X |

Source: https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1

dir.ca.gov says pel (mg/m³) is **3**, as of 2026-08-05.

> 100016 | S | p-Nitroaniline | -- | 3

Source: https://www.dir.ca.gov/title8/5155.html


## Source

- https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
- https://www.dir.ca.gov/title8/5155.html

Last verified: 2026-08-05. Review by: 2027-08-05.
Part of [US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side](https://referencesource.org/workplace-exposure-limits/).