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20256

Sigma-Aldrich

tert-Butyl methyl ether

puriss. p.a., ≥99.5% (GC)

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Synonym(s):
MTBE, Methyl tert-butyl ether
Linear Formula:
(CH3)3COCH3
CAS Number:
Molecular Weight:
88.15
Beilstein:
1730942
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.07

vapor density

3.1 (vs air)

Quality Level

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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1 of 4

This Item
443808MX0819179787
tert-Butyl methyl ether Meets ACS Specifications GR ACS

Supelco

MX0819

tert-Butyl methyl ether

vapor pressure

4.05 psi

vapor pressure

4.05 psi

vapor pressure

268 hPa ( 20 °C)

vapor pressure

14.78 psi ( 55 °C), 4.05 psi ( 20 °C)

grade

puriss. p.a.

grade

-

grade

-

grade

-

assay

≥99.5% (GC)

assay

≥99.0%

assay

≥99% (GC)

assay

≥98%

form

liquid

form

liquid

form

liquid

form

liquid

autoignition temp.

705 °F

autoignition temp.

705 °F

autoignition temp.

-

autoignition temp.

705 °F

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

Signal Word

Danger

Hazard Statements

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


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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
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
Free radical mechanisms for the treatment of methyl tert-butyl ether (MTBE) via advanced oxidation/reductive processes in aqueous solutions.
William J Cooper et al.
Chemical reviews, 109(3), 1302-1345 (2009-01-27)
Torsten C Schmidt et al.
Journal of contaminant hydrology, 70(3-4), 173-203 (2004-05-12)
The fate of fuel oxygenates such as methyl tert-butyl ether (MTBE) in the subsurface is governed by their degradability under various redox conditions. The key intermediate in degradation of MTBE and ethyl tert-butyl ether (ETBE) is tert-butyl alcohol (TBA) which
Mònica Rosell et al.
Environmental science & technology, 46(9), 4757-4766 (2012-03-30)
Although the uniform initial hydroxylation of methyl tert-butyl ether (MTBE) and other oxygenates during aerobic biodegradation has already been proven by molecular tools, variations in carbon and hydrogen enrichment factors (ε(C) and ε(H)) have still been associated with different reaction

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