---
type: threshold
id: anisidine-o-p-isomers
asset: workplace-exposure-limits
title: "Anisidine (o-, p-isomers) — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
sources:
  - https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
source_quote: "Anisidine (o-, p-isomers) | 29191-52-4 | - | 0.5 | X |"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Anisidine (o-, p-isomers)"
cas_number: "29191-52-4"
pel_mgm3: "0.5"
verified: true
---
**Substance:** Anisidine (o-, p-isomers)

**CAS No.:** 29191-52-4

**PEL (mg/m³):** 0.5

> Anisidine (o-, p-isomers) | 29191-52-4 | - | 0.5 | X |

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