---
type: threshold
id: 2-aminopyridine
asset: workplace-exposure-limits
title: "2-Aminopyridine — 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: "2-Aminopyridine | 504-29-0 | 0.5 | 2 | - |"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "2-Aminopyridine"
cas_number: "504-29-0"
pel_ppm: "0.5"
pel_mgm3: "2"
verified: true
---
**Substance:** 2-Aminopyridine

**CAS No.:** 504-29-0

**PEL (ppm):** 0.5

**PEL (mg/m³):** 2

> 2-Aminopyridine | 504-29-0 | 0.5 | 2 | - |

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