179787

tert-Butyl methyl ether

reagent grade, ≥98%

• Synonym(s): MTBE, Methyl tert-butyl ether
• Linear Formula: (CH₃)₃COCH₃
• CAS Number: 1634-04-4
• Molecular Weight: 88.15
• Beilstein/REAXYS Number: 1730942
• EC Number: 216-653-1
• MDL number: MFCD00008812
• UNSPSC Code: 12352112
• PubChem Substance ID: 329751595
• NACRES: NA.07
• grade: reagent grade
• assay: ≥98%
• bp: 55-56 °C (lit.)
• vapor pressure: 14.78 psi ( 55 °C); 4.05 psi ( 20 °C)

Properties

• grade: reagent grade
• Quality Level: 100
• vapor density: 3.1 (vs air)
• vapor pressure: 14.78 psi ( 55 °C); 4.05 psi ( 20 °C)
• assay: ≥98%
• form: liquid
• autoignition temp.: 705 °F
• expl. lim.: 15.1 %
• dilution: (for analytical testing)
• impurities: ≤0.0005% peroxides (as H₂O₂); ≤0.1% water (Karl Fischer)

Description

General description

tert-Butyl methyl ether is a commonly used organic solvent. It 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. Its addition during the polymerization of propene by stopped-flow method increases the number of active sites.

Safety Information

• pictograms: GHS02,GHS07
• signalword: Danger
• hcodes: H225,H315
• pcodes: P210 - P233 - P240 - P241 - P242 - P303 + P361 + P353
• Hazard Classifications: Flam. Liq. 2 - Skin Irrit. 2
• Storage Class: 3 - Flammable liquids
• wgk_germany: WGK 1
• flash_point_f: -18.4 °F - closed cup
• flash_point_c: -28 °C - closed cup