Hazard search

Dimethoxymethane

CAS number
109-87-5
Also known as
Dimethoxymethane (methylal) · Methylal · Methylal (dimethoxymethane) · Methylal (dimethoxymethane) (see online Passive Sampling Guide) · Methylal (see dimethoxymethane)

UK workplace exposure limits

LimitValueApplies to
8-hour TWA 1000 ppm
8-hour TWA 3160 mg/m³
15-minute STEL 1250 ppm
15-minute STEL 3950 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 1611
Methylal by GC-FID
Method document (opens in a new tab)
Active (pump) Charcoal tube (100/50mg) GC-FID 226-01
Other Passive GC-FID 575-001
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)