Hazard search

Methyl tert-butyl ether

CAS number
1634-04-4
Also known as
Methyl t-butyl ether · Methyl-t-butyl-ether (MTBE) · Methyl-tert-butyl ether (see online Passive Sampling Guide) · MTBE · t-Butyl methyl ether (methyl t-butyl ether, MTBE) · t-Butyl methyl ether (MTBE) · tert-Butyl methyl ether

UK workplace exposure limits

LimitValueApplies to
8-hour TWA 50 ppm
8-hour TWA 183.5 mg/m³
15-minute STEL 100 ppm
15-minute STEL 367 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
MDHS 96 Active (pump) GC-FID 226-09
MDHS 96
VOCs by solvent desorption and GC
Method document (opens in a new tab)
Active (pump) Set of two Charcoal Tubes (400mg, 200mg) 226-37
NIOSH 1615
Methyl tert-butyl ether by GC-FID
Method document (opens in a new tab)
Active (pump) Set of two charcoal tubes (400mg, 200mg) GC-FID 226-37
EPA TO-17
VOCs by thermal desorption and GC
Method document (opens in a new tab)
Active (pump) Two Thermal Desorption tubes TD, GC 226-350
226-347
224-26-02
224-26-CPC
Non-agency
VOCs by solvent extraction and GC
Method document (opens in a new tab)
Passive Anasorb CSC (500mg) passive sampler 690-105
Other Passive GC-FID 575-001
Other Passive GC-FID 575-002
Other Passive GC-FID 690-105
Other Internal Passive GC-FID 690-105

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)