Reference Source

Aniline — CAS 62533 — workplace exposure limit

What is the pel (ppm) for Aniline — CAS 62533 — workplace exposure limit?

For Aniline, pel (ppm) is disputed: 2 per dir.ca.gov, 5 per osha.gov; pel (mg/m³) is disputed: 7.6 per dir.ca.gov, 19 per osha.gov; cas no. is 62533, verified against its source on 2026-09-29.

62533 | S | Aniline | 2 | 7.6

— dir.ca.gov, retrieved 2026-08-05

2
The most of this substance workplace air may legally contain, averaged over an 8-hour shift — OSHA's permissible exposure limit (PEL), in parts per million, from the agency's own table row quoted below. Where federal OSHA and Cal/OSHA disagree, both limits are stated, each with its own agency's table row as evidence. NIOSH's number, where there is one, is shown separately: it is a recommended limit, not a legal one, and it is often the strictest of the three.
Sourcedir.ca.gov
Verified
Review by
DatasetUS workplace chemical exposure limits: federal OSHA, Cal/OSHA and NIOSH, side by side
Substance
Aniline verified
CAS No.
62533 verified
PEL (ppm)
2 sources disagree
PEL (mg/m³)
7.6 sources disagree
NIOSH REL, as stated
Ca See Appendix A per cdc.gov

What cdc.gov says

NIOSH REL Ca See Appendix A

— cdc.gov, retrieved 2026-09-08

Substance

CDC - NIOSH Pocket Guide to Chemical Hazards - Aniline (and homologs)

CAS No.

CAS No. 62-53-3

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 — deciding between them is yours, not ours.

PEL (ppm)

dir.ca.gov says pel (ppm) is 2, as of 2026-08-05.

62533 | S | Aniline | 2 | 7.6

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

osha.gov says pel (ppm) is 5, as of 2026-08-05.

Aniline and homologs | 62-53-3 | 5 | 19 | X |

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

PEL (mg/m³)

dir.ca.gov says pel (mg/m³) is 7.6, as of 2026-08-05.

62533 | S | Aniline | 2 | 7.6

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

osha.gov says pel (mg/m³) is 19, as of 2026-08-05.

Aniline and homologs | 62-53-3 | 5 | 19 | X |

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

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.

Also see: Chemical reporting thresholds

More on workplace safety and hazardous materials

All 26 datasets on this subject · Look something up