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306975

Sigma-Aldrich

tert-Butyl methyl ether

anhydrous, 99.8%

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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.21

grade

anhydrous

Quality Level

vapor density

3.1 (vs air)

vapor pressure

4.05 psi

Assay

99.8%

form

liquid

autoignition temp.

705 °F

expl. lim.

15.1 %

impurities

<0.003% water
<0.005% water (100 mL pkg)

evapn. residue

<0.0005%

refractive index

n20/D 1.369 (lit.)

bp

55-56 °C (lit.)

mp

-110 °C

density

0.74 g/mL at 25 °C (lit.)

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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This Item
443808179787675407
vapor density

3.1 (vs air)

vapor density

3.1 (vs air)

vapor density

3.1 (vs air)

vapor density

3.1 (vs air)

vapor pressure

4.05 psi

vapor pressure

4.05 psi

vapor pressure

14.78 psi ( 55 °C), 4.05 psi ( 20 °C)

vapor pressure

4.05 psi

assay

99.8%

assay

≥99.0%

assay

≥98%

assay

99.9%

form

liquid

form

liquid

form

liquid

form

liquid

autoignition temp.

705 °F

autoignition temp.

705 °F

autoignition temp.

705 °F

autoignition temp.

705 °F

General description

tert-Butyl methyl ether (MTBE) is a gasoline additive. MTBE undergoes oxidative degradation in the presence of propane-oxidizing bacterial strains. The kinetic studies of heat-assisted persulfate oxidation of MTBE under various parameters suggests that the reaction follows the pseudo-first-order kinetics. MTBE can be synthesized by acid catalyzed reaction between methanol and isobutene. A study suggests that the addition of MTBE increases the number of active sites during polymerization of propene by stopped-flow method.
tert-Butyl methyl ether is a commonly used organic solvent that can be synthesized by acid catalyzed reaction between methanol and isobutene. It is an effective alternative to lead containing additives for enhancing the octane rating of gasoline.

Application

tert-Butyl methyl ether may be used to synthesize fatty acid methyl esters (FAMEs) and glycerol tert-butyl ether via transesterification with canola oil under supercritical conditions.

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

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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<BIG>Eagleson M. </BIG>
Concise Encyclopedia Chemistry, 154-154 (1995)
Application of artificial neural networks for modeling of the treatment of wastewater contaminated with methyl tert-butyl ether (MTBE) by UV/H 2 O 2 process.
Salari D, et al.
Journal of Hazardous Materials, 125(1), 205-210 (2005)
Viktor Nilsson et al.
Chemphyschem : a European journal of chemical physics and physical chemistry, 21(11), 1166-1176 (2020-04-21)
To elucidate what properties control and practically limit ion transport in highly concentrated electrolytes (HCEs), the viscosity, ionic conductivity, ionicity, and transport numbers were studied for nine model electrolytes and connected to the rate capability in Li-ion battery (LIB) cells.
Relative solubility, stability, and absorptivity of lutein and β-carotene in organic solvents.
Craft NE and Soares JH.
Journal of Agricultural and Food Chemistry, 40(3), 431-434 (1992)
New approach of catalyst-free biodiesel production from canola oil in supercritical tert-butyl methyl ether (MTBE).
Farobie O, et al.
Fuel: The Science and Technology of Fuel and Energy, 135, 172-181 (2014)

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