675407

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: 1634-04-4
• Molecular Weight: 88.15
• Beilstein: 1730942
• EC Number: 216-653-1
• MDL number: MFCD00008812
• UNSPSC Code: 12190000
• PubChem Substance ID: 57652092

Properties

• grade: HPLC Plus; for residue analysis
• Quality Level: 100
• 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 A_max: ≤1.00; λ: 225 nm A_max: ≤0.50; λ: 250 nm A_max: ≤0.10; 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 (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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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
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves