Ethylbenzene
| Ethylbenzene | |
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Ethylbenzene |
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Other names
Ethylbenzol, EB, |
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| Identifiers | |
| CAS number | 100-41-4  |
| PubChem | 7500 |
| ChemSpider | 7219 |
| UNII | L5I45M5G0O |
| DrugBank | DB01722 |
| KEGG | C07111 |
| ChEBI | CHEBI:16101 |
| ChEMBL | CHEMBL371561 |
| RTECS number | DA0700000 |
| Jmol-3D images | Image 1 |
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| Properties | |
| Molecular formula | C8H10 |
| Molar mass | 106.17 g mol−1 |
| Appearance | Clear, colorless liquid |
| Density | 0.8665 g/mL |
| Melting point |
-95 °C, 178 K, -139 °F |
| Boiling point |
136 °C, 409 K, 277 °F |
| Solubility in water | 0.015 g/100 mL (20 °C) |
| Viscosity | 0.669 cP at 20 °C |
| Hazards | |
| R-phrases | R11 R20 |
| S-phrases | (S2) S16 S24/25 S29 |
| Main hazards | Flammable |
| NFPA 704 |
 3
2
0
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| Flash point | 15-20 °C |
| Related compounds | |
| Related aromatic hydrocarbons |
styrene, toluene |
| Related compounds | benzene polystyrene |
 (verify) (what is:  / ?)Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| Infobox references | |
Ethylbenzene is an organic compound with the formula C6H5CH2CH3. This aromatic hydrocarbon is important in the petrochemical industry as an intermediate in the production of styrene, which in turn is used for making polystyrene, a common plastic material.
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[edit] Production
Although often present in small amounts in crude oil, ethylbenzene is produced in bulk quantities by combining benzene and ethylene in an acid-catalyzed chemical reaction:
- C6H6 + C2H4 → C6H5CH2CH3
Approximately 24,700,000 tons were produced in 1999.[1] Catalytic dehydrogenation of the ethylbenzene then gives hydrogen and styrene:
- C6H5CH2CH3 → C6H5CH=CH2 + H2
[edit] Other uses
Ethylbenzene has been used as a solvent for aluminium bromide in the anhydrous electrodeposition of aluminium. Ethylbenzene is also an ingredient in some paints, and solvent grade xylene (xylol) is nearly always contaminated with a few percent of ethylbenzene.
[edit] References
- ^ Vincent A.Welch, Kevin J. Fallon, Heinz-Peter Gelbke “Ethylbenzene” Ullmann’s Encyclopedia of Industrial Chemistry, Wiley-VCH, Weinheim, 2005. doi:10.1002/14356007.a10_035.pub2
