Methyl Tertiary Butyl Ether

Methyl Tertiary Butyl Ether Suppliers

Methyl Tertiary Butyl Ether

CAS Number: 1634‑04‑4

Synonyms: MTBE; tert‑Butyl methyl ether; 2‑Methoxy‑2‑methylpropane

Chemical Formula:C₅H₁₂O

Molecular Weight:88.15 g/mol

Product Introduction

A colorless, highly flammable liquid with a distinctive ether-like odor. It’s primarily used as a gasoline octane booster and oxygenate, and as a solvent in chromatography and industrial extractions.

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Physical & Chemical Properties

Property Value
Appearance Colorless liquid
Odor Ether-like, anesthetic aroma
Density @ 20 °C 0.740 g/mL
Melting Point –109 °C
Boiling Point 55–56 °C
Flash Point (CC) –32.8 °C
Vapor Pressure @ 20 °C ~27 kPa
Solubility in Water ~26 g/L
Vapor Density ~3 × air
Explosive Limits 1.5–8.5 vol %

Applications

  • Fuel additive: Enhances octane in gasoline (up to 15 vol %), improves combustion/lowers emissions
  • Solvent: Used in GC, HPLC, cosmetic extractions, lipid analytics
  • Analytical standard: Reference for MTBE monitoring in water via headspace‑SPME

Safety & Handling

  • Highly flammable: flash point ~–33 °C.
  • Volatile and heavier than air: may cause dizziness.
  • Groundwater contaminant: water-soluble and persistent (taste threshold <30 ppb)
  • IARC not classifiable: animal tumor data exists
  • Store cool, ventilated, away from ignition:use PPE

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