34875

tert-Butyl methyl ether

suitable for HPLC, ≥99.8%

• Synonym(s): MTBE, Methyl tert-butyl ether
• Linear Formula: (CH₃)₃COCH₃
• CAS Number: 1634-04-4
• Molecular Weight: 88.15
• Beilstein: 1730942
• EC Number: 216-653-1
• MDL number: MFCD00008812
• UNSPSC Code: 41116105
• PubChem Substance ID: 329755082
• NACRES: NA.07

Properties

• vapor density: 3.1 (vs air)
• Quality Level: 100
• 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 A_max: ≤1.0; λ: 220 nm A_max: ≤0.40; λ: 250 nm A_max: ≤0.10; λ: 260 nm A_max: ≤0.05; λ: 300 nm A_max: ≤0.005; λ: 400 nm A_max: ≤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

Description

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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Safety Information

• Pictograms: GHS02,GHS07
• Signal Word: Danger
• Hazard Statements: H225,H315
• Precautionary Statements: P210 - P233 - P240 - P241 - P242 - P303 + P361 + P353
• 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