---
type: threshold
id: 3-3-dichlorobenzidine-4-4-diamino-3-3-dichlorobiphenyl-see-section-5209
asset: workplace-exposure-limits
title: "3,3'-Dichlorobenzidine; 4,4'-diamino-3,3'-dichlorobiphenyl; see Section 5209 — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
sources:
  - https://www.dir.ca.gov/title8/5155.html
source_quote: "91941 | S | 3,3'-Dichlorobenzidine; 4,4'-diamino-3,3'-dichlorobiphenyl; see Section 5209"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "3,3'-Dichlorobenzidine; 4,4'-diamino-3,3'-dichlorobiphenyl; see Section 5209"
verified: true
---
**Substance:** 3,3'-Dichlorobenzidine; 4,4'-diamino-3,3'-dichlorobiphenyl; see Section 5209

> 91941 | S | 3,3'-Dichlorobenzidine; 4,4'-diamino-3,3'-dichlorobiphenyl; see Section 5209

Source: <https://www.dir.ca.gov/title8/5155.html>