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

LimitValueApplies 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

MethodSamplingMedium AnalysisPart numbers
MDHS 88
VOCs by solvent desorption and GC-FID
Method document (opens in a new tab)
Passive Anasorb CSC (350 mg) or Anasorb® 747 (500 mg) passive sampler GC-FID 575-001
575-002
MDHS 96
VOCs by solvent desorption and GC
Method document (opens in a new tab)
Active (pump) Charcoal tube (100/50mg) GC-FID 226-01
MDHS 104
VOCs by solvent desorption and GC
Method document (opens in a new tab)
Active (pump) Charcoal tube (100/50mg) 226-01
NIOSH 1402
Alcohols by GC-FID
Method document (opens in a new tab)
Active (pump) Charcoal tube (100/50mg) GC-FID 226-01
NIOSH 1405
Alcohols (combined) by GC-FID
Method document (opens in a new tab)
Active (pump) Charcoal tube (100/50mg) GC-FID 226-01
Non-agency
Diacetone alcohol by Colorimetric analysis
Direct-reading Gastec detector tube 810-154
Other Passive GC-FID 575-001
Other Passive GC-FID 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); SKC Inc. (USA), Sampling Guides, used with SKC's permission (opens in a new tab)