---
type: threshold
id: phosphorus-trichloride
asset: workplace-exposure-limits
title: "Phosphorus trichloride — 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: "Phosphorus trichloride | 7719-12-2 | 0.5 | 3 | - |"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Phosphorus trichloride"
cas_number: "7719-12-2"
pel_ppm: "0.5"
pel_mgm3: "3"
verified: true
---
**Substance:** Phosphorus trichloride

**CAS No.:** 7719-12-2

**PEL (ppm):** 0.5

**PEL (mg/m³):** 3

> Phosphorus trichloride | 7719-12-2 | 0.5 | 3 | - |

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