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34875

Sigma-Aldrich

tert-Butyl methyl ether

suitable for HPLC, ≥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.07

vapor density

3.1 (vs air)

Quality Level

vapor pressure

4.05 psi

Assay

≥99.8%

form

liquid

autoignition temp.

705 °F

expl. lim.

15.1 %

technique(s)

HPLC: suitable

impurities

≤0.0005% non-volatile matter
≤0.0005% peroxides (as H2O2)
≤0.002% free acid (as CH3COOH)
≤0.01% water (Karl Fischer)

color

APHA: ≤10

transmittance

220 nm, ≥40%
250 nm, ≥80%
260 nm, ≥90%
290 nm, ≥99%

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: ≤1.0
λ: 220 nm Amax: ≤0.40
λ: 250 nm Amax: ≤0.10
λ: 260 nm Amax: ≤0.05
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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This Item
443808650560675407
vapor pressure

4.05 psi

vapor pressure

4.05 psi

vapor pressure

4.05 psi

vapor pressure

4.05 psi

assay

≥99.8%

assay

≥99.0%

assay

99.9%

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

expl. lim.

15.1 %

expl. lim.

15.1 %

expl. lim.

15.1 %

expl. lim.

15.1 %

General description

tert-Butyl methyl ether (methyl tert-butyl ether, MTBE) is a gasoline additive. Its oxidative degradation by propane-oxidizing bacterial strains has been tested. Kinetic studies of its heat-assisted persulfate oxidation at various pH, temperature, oxidant concentration and ionic strength levels suggests that reaction exhibits a pseudo-first-order decay model.

Application

tert-Butyl methyl ether (methyl tert-butyl ether, MTBE) has been used in the isolation and quantitative determination of carotenes and xanthophylls from Capsicum annum pericarp extracts by HPLC.

Other Notes

Important notice
  • The article number 34875-4X2.5L will be discontinued. Please order the single bottle 34875-2.5L which is physically identical with the same exact specifications.
  • The article number 34875-6X1L will be discontinued. Please order the single bottle 34875-1L which is physically identical with the same exact specifications.

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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


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Shigeo Takashima et al.
Scientific reports, 10(1), 12988-12988 (2020-08-02)
Fatty acids (FAs) are the central components of life: they constitute biological membranes in the form of lipid, act as signaling molecules, and are used as energy sources. FAs are classified according to their chain lengths and the number and
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
Carotenoid Extraction and Quantification from Capsicum annuum.
Richins RD, et al.
Bio-protocol, 4(19), e1256-e1256 (2014)
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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