Methyl tert-butyl ether
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Methyl tert-butyl ether (MTBE), also known as tert-butyl methyl ether, is an organic compound with a structural formula (CH3)3COCH3. MTBE is a volatile, flammable, and colorless liquid that is sparingly soluble in water.[1] Primarily used as a fuel additive, MTBE is blended into gasoline to increase its octane rating and knock resistance, and reduce unwanted emissions.[2][3]
Quick Facts Names, Identifiers ...
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Preferred IUPAC name
2-Methoxy-2-methylpropane | |
Other names
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Identifiers | |
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ChEBI | |
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ECHA InfoCard | 100.015.140 |
KEGG |
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UNII | |
CompTox Dashboard (EPA) |
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Properties | |
C5H12O | |
Molar mass | 88.150 g·mol−1 |
Appearance | colourless liquid |
Density | 0.7404 g/cm3 |
Melting point | −108.6 °C (−163.5 °F; 164.6 K) |
Boiling point | 55.5 °C (131.9 °F; 328.6 K) |
26 g/L (20 °C)[1] | |
Vapor pressure | 27kPa (20ºC) |
Viscosity | 3.4·10-4 Pa·s (at 25ºC) |
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NFPA 704 (fire diamond) | |
Flash point | −32.78 °C (−27.00 °F; 240.37 K) |
435 °C (815 °F; 708 K) | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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