---
type: threshold
id: propylene-imine
asset: workplace-exposure-limits
title: "Propylene imine — 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: "Propylene imine | 75-55-8 | 2 | 5 | X |"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Propylene imine"
cas_number: "75-55-8"
pel_ppm: "2"
pel_mgm3: "5"
verified: true
---
**Substance:** Propylene imine

**CAS No.:** 75-55-8

**PEL (ppm):** 2

**PEL (mg/m³):** 5

> Propylene imine | 75-55-8 | 2 | 5 | X |

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