Ethyl tert-butyl ether
Ethyl tert-butyl ether
IUPAC name
2-Ethoxy-2-methyl-propane
Other names
Ethyl tert-butyl ether
Ethyl tertiary butyl ether
Ethyl tert-butyl oxide
tert-Butyl ethyl ether
Ethyl t-butyl ether
Identifiers
Abbreviations
ETBE
CAS number
PubChem
12512
EINECS number
211-309-7
RTECS number
KN4730200
SMILES
CCOC(C)(C)C
InChI
1/C6H14O/c1-5-7-6(2,3)4/h5H2,1-4H3
Properties
Molecular formula
C6H14O
Molar mass
102.17 g mol-1
Appearance
Clear colorless liquid
Density
0.7364 g/cm3
Melting point
-94 °C, 179 K, -137 °F
Boiling point
69-71 °C
Solubility in water
1.2 g/100 g
Hazards
S-phrases
S16
Flash point
-19 °C
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)
Infobox disclaimer and references
Ethyl tert-butyl ether (ETBE) is commonly used as an oxygenate gasoline additive in the production of gasoline from crude oil. ETBE offers equal or greater air quality benefits as ethanol, while being technically and logistically less challenging. Unlike ethanol, ETBE does not induce evaporation of gasoline, which is one of the causes of smog, and does not absorb moisture from the atmosphere.
Contents
//
Synthesis
It is synthesized by mixing ethanol and isobutylene and reacting them with heat over a catalyst.
Ethanol, produced by fermentation and distillation, is more expensive than methanol, which is derived from natural gas. Therefore, MTBE, made from methanol is cheaper than ETBE, made from ethanol. However, (bio)ethanol makes ETBE partially a biofuel, while MTBE is entirely a fossil fuel and introduces a risk to the environment (see the article on MTBE).
See also
- Methyl tert-butyl ether
References
- ^ Merck Index, 11th Edition, 3732.
External links
- EFOA
Retrieved from “http://en.wikipedia.org/wiki/Ethyl_tert-butyl_ether”
Categories: Ethers | Ether solvents | Oxygenates | Pollutants