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Merck

306975

tert-Butyl methyl ether

anhydrous, 99.8%

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
UNSPSC Code:
12352112
NACRES:
NA.21
PubChem Substance ID:
57648465
EC Number:
216-653-1
Beilstein/REAXYS Number:
1730942
MDL number:
MFCD00008812
Assay:
99.8%
Grade:
anhydrous
Vapor pressure:
4.05 psi

Key Documents

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InChI key

BZLVMXJERCGZMT-UHFFFAOYSA-N

InChI

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

SMILES string

COC(C)(C)C

grade

anhydrous

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%

Quality Level

100

mp

-110 °C

density

0.74 g/mL at 25 °C (lit.)

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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
GHS02,GHS07

signalword

Danger

hcodes

H225,H315

Hazard Classifications

Flam. Liq. 2 - Skin Irrit. 2

Storage Class

3 - Flammable liquids

flash_point_f

-18.4 °F - closed cup

flash_point_c

-28 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves

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.

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

fsl

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified

306975-1L:4548173936475 + 306975-2L:4548173936482 + 306975-BULK: + 306975-PB-200LP1SB: + 306975-20L-P2: + 306975-PI-200L-P2: + 306975-6X1L:4548173936499 + 306975-100ML:4548173936468 + 306975-PB-1250L-P1: + 306975-250ML: + 306975-VAR:

jan

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Certificates of Analysis (COA)

Lot/Batch Number
SHBT5055
SHBT2896
SHBT0200
SHBS8939
SHBS4423

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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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