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20256

Sigma-Aldrich

tert-Butyl methyl ether

puriss. p.a., ≥99.5% (GC)

Synonym(s):

MTBE, Methyl tert-butyl ether

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About This Item

Linear Formula:
(CH3)3COCH3
CAS Number:
1634-04-4
Molecular Weight:
88.15
Beilstein:
1730942
EC Number:
216-653-1
MDL number:
MFCD00008812
UNSPSC Code:
12352112
PubChem Substance ID:
329751997
NACRES:
NA.07

vapor density

3.1 (vs air)

Quality Level

100

vapor pressure

4.05 psi

grade

puriss. p.a.

Assay

≥99.5% (GC)

form

liquid

autoignition temp.

705 °F

expl. lim.

15.1 %

impurities

≤0.0005% peroxides (as H2O2)
≤0.005% free acid (as CH3COOH)
≤0.05% water

evapn. residue

≤0.005%

refractive index

n20/D 1.362-1.376
n20/D 1.369 (lit.)

bp

55-56 °C (lit.)

mp

-110 °C

density

0.736-0.744 g/mL at 20 °C
0.74 g/mL at 25 °C (lit.)

cation traces

Al: ≤0.5 mg/kg
Ba: ≤0.1 mg/kg
Bi: ≤0.1 mg/kg
Ca: ≤0.5 mg/kg
Cd: ≤0.05 mg/kg
Co: ≤0.02 mg/kg
Cr: ≤0.02 mg/kg
Cu: ≤0.02 mg/kg
Fe: ≤0.1 mg/kg
K: ≤0.5 mg/kg
Li: ≤0.1 mg/kg
Mg: ≤0.1 mg/kg
Mn: ≤0.02 mg/kg
Mo: ≤0.1 mg/kg
Na: ≤0.5 mg/kg
Ni: ≤0.02 mg/kg
Pb: ≤0.1 mg/kg
Sr: ≤0.1 mg/kg
Zn: ≤0.1 mg/kg

SMILES string

COC(C)(C)C

InChI

1S/C5H12O/c1-5(2,3)6-4/h1-4H3

InChI key

BZLVMXJERCGZMT-UHFFFAOYSA-N

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General description

tert-Butyl methyl ether (TBME) TBME is a common organic solvent used in the Grignard reaction as an alternative to tetrahydrofuran. TBME has been reported to be a butylating agent for active aromatic systems. TBME is also used to facilitate tert-butyl esterification under microwave conditions.

Application

tert-Butyl methyl ether is used as a solvent:
  • In the synthesis of acyl azides.
  • In the production of biodiesel.

Pictograms

FlameExclamation mark
GHS02,GHS07

Signal Word

Danger

Hazard Statements

H225,H315

Hazard Classifications

Flam. Liq. 2 - Skin Irrit. 2

Storage Class Code

3 - Flammable liquids

WGK

WGK 1

Flash Point(F)

-18.4 °F - closed cup

Flash Point(C)

-28 °C - closed cup

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

FSL

Group 4: Flammable liquids
Type 1 petroleums
Hazardous rank II
Water insoluble liquid

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

20256-RSAMPLE:
20256-1L-F:
20256-RSAMPLE-F:
20256-2.5L-F:
20256-VAR-F:
20256-BULK-F:
20256-6X1L-F:
20256-4X2.5L-F:
20256-2.5L-CB-F:

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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J R Hanson et al.
Applied and environmental microbiology, 65(11), 4788-4792 (1999-11-05)
A bacterial strain, PM1, which is able to utilize methyl tert-butyl ether (MTBE) as its sole carbon and energy source, was isolated from a mixed microbial consortium in a compost biofilter capable of degrading MTBE. Initial linear rates of MTBE
Kun-Chang Huang et al.
Chemosphere, 49(4), 413-420 (2002-10-09)
The kinetics of heat-assisted persulfate oxidation of methyl tert-butyl ether (MTBE) in aqueous solutions at various pH, temperature, oxidant concentration and ionic strength levels was studied. The MTBE degradation was found to follow a pseudo-first-order decay model. The pseudo-first-order rate
R J Steffan et al.
Applied and environmental microbiology, 63(11), 4216-4222 (1997-11-15)
Several propane-oxidizing bacteria were tested for their ability to degrade gasoline oxygenates, including methyl tert-butyl ether (MTBE), ethyl tert-butyl ether (ETBE), and tert-amyl methyl ether (TAME). Both a laboratory strain and natural isolates were able to degrade each compound after
Sarah K Abbott et al.
Lipids, 48(3), 307-318 (2013-01-29)
We have developed a protocol suitable for high-throughput lipidomic analysis of human brain samples. The traditional Folch extraction (using chloroform and glass-glass homogenization) was compared to a high-throughput method combining methyl-tert-butyl ether (MTBE) extraction with mechanical homogenization utilizing ceramic beads.
Eva M Seeger et al.
Water research, 47(2), 769-780 (2012-12-04)
For several pilot-scale constructed wetlands (CWs: a planted and unplanted gravel filter) and a hydroponic plant root mat (operating at two water levels), used for treating groundwater contaminated with BTEX, the fuel additive MTBE and ammonium, the hydrodynamic behavior was
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