---
type: threshold
id: hexachloronaphthalene
asset: workplace-exposure-limits
title: "Hexachloronaphthalene — 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: "Hexachloronaphthalene | 1335-87-1 | - | 0.2 | X |"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Hexachloronaphthalene"
cas_number: "1335-87-1"
pel_mgm3: "0.2"
verified: true
---
**Substance:** Hexachloronaphthalene

**CAS No.:** 1335-87-1

**PEL (mg/m³):** 0.2

> Hexachloronaphthalene | 1335-87-1 | - | 0.2 | X |

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