---
type: threshold
id: chlorinated-diphenyl-oxide
asset: workplace-exposure-limits
title: "Chlorinated diphenyl oxide — 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: "Chlorinated diphenyl oxide | 55720-99-5 | - | 0.5 | - |"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Chlorinated diphenyl oxide"
cas_number: "55720-99-5"
pel_mgm3: "0.5"
verified: true
---
**Substance:** Chlorinated diphenyl oxide

**CAS No.:** 55720-99-5

**PEL (mg/m³):** 0.5

> Chlorinated diphenyl oxide | 55720-99-5 | - | 0.5 | - |

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