---
type: threshold
id: thioglycolic-acid
asset: workplace-exposure-limits
title: "Thioglycolic acid — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
sources:
  - https://www.dir.ca.gov/title8/5155.html
source_quote: "68111 | S | Thioglycolic acid | 1 | 3.8"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Thioglycolic acid"
pel_ppm: "1"
pel_mgm3: "3.8"
verified: true
---
**Substance:** Thioglycolic acid

**PEL (ppm):** 1

**PEL (mg/m³):** 3.8

> 68111 | S | Thioglycolic acid | 1 | 3.8

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