---
type: threshold
id: benzidine-4-4-diaminobiphenyl-see-section-5209
asset: workplace-exposure-limits
title: "Benzidine; 4,4′-diaminobiphenyl, 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: "92875 | S | Benzidine; 4,4′-diaminobiphenyl, see Section 5209"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Benzidine; 4,4′-diaminobiphenyl, see Section 5209"
verified: true
---
**Substance:** Benzidine; 4,4′-diaminobiphenyl, see Section 5209

> 92875 | S | Benzidine; 4,4′-diaminobiphenyl, see Section 5209

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