650560

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/REAXYS Number: 1730942
• EC Number: 216-653-1
• MDL number: MFCD00008812
• UNSPSC Code: 12190000
• PubChem Substance ID: 329760029
• NACRES: NA.07

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; <1.0 ppb Fluorescence (quinine) at 365 nm
• evapn. residue: ≤0.0001%
• halogenated residue: ≤10 ng/L (as heptachlor epoxide)
• refractive index: n20/D 1.369 (lit.)
• bp: 55-56 °C (lit.)
• mp: -110 °C
• density: 0.74 g/mL at 25 °C (lit.)
• λ: H₂O reference
• UV absorption: λ: 210 nm A_max: 1.0; λ: 225 nm A_max: 0.50; λ: 250 nm A_max: 0.10; λ: 300-400 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 is a gasoline additive. Its oxidative degradation by propane-oxidizing bacterial strains has been tested. Kinetics of its heat-assisted persulfate oxidation has been investigated at various pH, temperature, oxidant concentration and ionic strength levels. Its biodegradation followed a pseudo-first-order decay model and its pseudo-first-order rate constants were evaluated. MTBE can be synthesized by acid catalyzed reaction between methanol and isobutene. A study suggests that the addition of MTBE increases the number of active sites during polymerization of propene by stopped-flow method.

Application

Suitable for HPLC, spectrophotometry, environmental testing

Other Notes

Pure-Pac^® II containers require the Micromatic MacroValve coupler for dispensing solvents, Z560723.

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Legal Information

Pure-Pac is a registered trademark of Merck KGaA, Darmstadt, Germany

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