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675407

Sigma-Aldrich

tert-Butyl methyl ether

HPLC Plus, for HPLC, GC, and residue analysis, 99.9%

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:

grade

HPLC Plus
for residue analysis

Quality Level

vapor density

3.1 (vs air)

vapor pressure

4.05 psi

Assay

99.9%

form

liquid

autoignition temp.

705 °F

expl. lim.

15.1 %

technique(s)

HPLC: suitable
gas chromatography (GC): suitable

impurities

≤0.02% Water

evapn. residue

≤0.0001%

refractive index

n20/D 1.369 (lit.)

bp

55-56 °C (lit.)

mp

-110 °C

density

0.74 g/mL at 25 °C (lit.)

UV absorption

λ: 210 nm Amax: ≤1.00
λ: 225 nm Amax: ≤0.50
λ: 250 nm Amax: ≤0.10
λ: 300 nm Amax: ≤0.005
λ: 400 nm Amax: ≤0.005

application(s)

food and beverages

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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44380865056034875
grade

HPLC Plus, for residue analysis

grade

ACS reagent

grade

HPLC Plus, for residue analysis

grade

-

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

4.05 psi

vapor pressure

4.05 psi

assay

99.9%

assay

≥99.0%

assay

99.9%

assay

≥99.8%

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 commonly used organic solvent. It can be synthesized by acid-catalyzed reaction between methanol and isobutene. It is an effective alternate to lead-containing additives for enhancing the octane rating of gasoline. The decomposition mechanism of MTBE by heat-assisted persulfate oxidation under different conditions has been reported. A study suggests that the addition of MTBE increases the number of active sites during polymerization of propene by the stopped-flow method.

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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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