---
title: "Thioglycolic acid (68-11-1): exposure limits and sampling"
url: https://analyt-mtc.com/tools/hazard-search/thioglycolic-acid-68-11-1/
lang: en
alternates:
  en: https://analyt-mtc.com/tools/hazard-search/thioglycolic-acid-68-11-1/
  de: https://analyt-mtc.com/de/tools/gefahrstoffsuche/thioglycolic-acid-68-11-1/
---

Hazard search

# Thioglycolic acid

CAS number

68-11-1

Also known as

2-Mercaptoacetic acid · 2-Mercaptoethanoic acid · 2-Thioglycolic acid · Mercaptoacetic acid

## UK workplace exposure limits

| Limit | Value | Applies to |
| --- | --- | --- |
| 8-hour TWA | 1 ppm |  |
| 8-hour TWA | 3.8 mg/m³ |  |

## Sampling methods

| Method | Sampling | Medium | Analysis | Part numbers |
| --- | --- | --- | --- | --- |
| **OSHA CSI** | Active (pump) |  | HPLC-UV | [225-36-1](https://analyt-mtc.com/catalog/product/skc-impingers/#part-225-36-1) / [225-22](https://analyt-mtc.com/catalog/product/biosampler/#part-225-22) |

Methods and limits as published by their agencies and summarised by SKC; check the current method and the limit that applies to you before sampling.

Source: [SKC Ltd (UK), Hazard Search, used with SKC's permission (opens in a new tab)](https://www.skcltd.com/hazard-search.html); [SKC Inc. (USA), Sampling Guides, used with SKC's permission (opens in a new tab)](https://international.skcinc.com/sampling-guides/)