---
title: "Diacetone alcohol (123-42-2): exposure limits and sampling"
url: https://analyt-mtc.com/tools/hazard-search/diacetone-alcohol-123-42-2/
lang: en
alternates:
  en: https://analyt-mtc.com/tools/hazard-search/diacetone-alcohol-123-42-2/
  de: https://analyt-mtc.com/de/tools/gefahrstoffsuche/diacetone-alcohol-123-42-2/
---

Hazard search

# Diacetone alcohol

CAS number

123-42-2

Also known as

4-Hydroxy-4-methyl-2-pentanone · 4-Hydroxy-4-methyl-2-pentanone (see diacetone alcohol) · 4-Hydroxy-4-methyl-2-petanone (alcohols combined) · 4-Hydroxy-4-methylpentan-2-one · Diacetone alcohol (alcohols combined) · Diacetone alcohol (alcohols III)

## UK workplace exposure limits

| Limit | Value | Applies to |
| --- | --- | --- |
| 8-hour TWA | 50 ppm |  |
| 8-hour TWA | 241 mg/m³ |  |
| 15-minute STEL | 75 ppm |  |
| 15-minute STEL | 362 mg/m³ |  |

## Sampling methods

| Method | Sampling | Medium | Analysis | Part numbers |
| --- | --- | --- | --- | --- |
| **MDHS 88** / VOCs by solvent desorption and GC-FID / [Method document (opens in a new tab)](https://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs88.pdf) | Passive | Anasorb CSC (350 mg) or Anasorb® 747 (500 mg) passive sampler | GC-FID | [575-001](https://analyt-mtc.com/catalog/product/skc-organic-vapour-passive-samplers/#part-575-001) / [575-002](https://analyt-mtc.com/catalog/product/skc-organic-vapour-passive-samplers/#part-575-002) |
| **MDHS 96** / VOCs by solvent desorption and GC / [Method document (opens in a new tab)](https://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs96.pdf) | Active (pump) | Charcoal tube (100/50mg) | GC-FID | [226-01](https://analyt-mtc.com/catalog/product/skc-anasorb-sorbent-tubes/) |
| **MDHS 104** / VOCs by solvent desorption and GC / [Method document (opens in a new tab)](https://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs104.pdf) | Active (pump) | Charcoal tube (100/50mg) |  | [226-01](https://analyt-mtc.com/catalog/product/skc-anasorb-sorbent-tubes/) |
| **NIOSH 1402** / Alcohols by GC-FID / [Method document (opens in a new tab)](http://www.cdc.gov/niosh/docs/2003-154/pdfs/1402.pdf) | Active (pump) | Charcoal tube (100/50mg) | GC-FID | [226-01](https://analyt-mtc.com/catalog/product/skc-anasorb-sorbent-tubes/) |
| **NIOSH 1405** / Alcohols (combined) by GC-FID / [Method document (opens in a new tab)](http://www.cdc.gov/niosh/docs/2003-154/pdfs/1405.pdf) | Active (pump) | Charcoal tube (100/50mg) | GC-FID | [226-01](https://analyt-mtc.com/catalog/product/skc-anasorb-sorbent-tubes/) |
| **Non-agency** / Diacetone alcohol by Colorimetric analysis | Direct-reading | Gastec detector tube |  | [810-154](https://analyt-mtc.com/catalog/product/gastec-colour-gas-detector-tubes/#part-gst-154) |
| **Other** | Passive |  | GC-FID | [575-001](https://analyt-mtc.com/catalog/product/skc-organic-vapour-passive-samplers/#part-575-001) |
| **Other** | Passive |  | GC-FID | [575-002](https://analyt-mtc.com/catalog/product/skc-organic-vapour-passive-samplers/#part-575-002) |

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/)