Hazard search

3-Methyl-1-butanol

CAS number
123-51-3
Also known as
1-Hydroxy-3-methylbutane · 3-Methylbutan-1-ol · Isoamyl alcohol · Isoamyl alcohol (alcohols combined) · Isoamyl alcohol (alcohols III) · Isoamyl alcohol (see online Passive Sampling Guide) · Isopentyl alcohol

UK workplace exposure limits

LimitValueApplies to
8-hour TWA 100 ppm
8-hour TWA 366 mg/m³
15-minute STEL 125 ppm
15-minute STEL 458 mg/m³

Sampling methods

MethodSamplingMedium AnalysisPart numbers
MDHS 88
VOCs by solvent desorption and GC
Method document (opens in a new tab)
Passive 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 by GC-FID
Method document (opens in a new tab)
Active (pump) Charcoal tube (100/50mg) GC-FID 226-01
Non-agency
Isoamyl alcohol by Colorimetric analysis
Direct-reading Gastec detector tube 810-117
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)