Cumene
From Wikipedia, the free encyclopedia
| Cumene | |
|---|---|
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| IUPAC name | (1-methylethyl)benzene |
| Other names | isopropylbenzene 2-phenylpropane |
| Identifiers | |
| CAS number | [98-82-8] |
| RTECS number | GR8575000 |
| SMILES | CC(C)c1ccccc1 |
| Properties | |
| Molecular formula | C9H12 |
| Molar mass | 120.19 g mol−1 |
| Appearance | colorless liquid |
| Density | 0.862 g cm−3, liquid |
| Melting point |
−96 °C (177 K) |
| Boiling point |
152 °C (425 K) |
| Solubility in water | insoluble |
| Viscosity | 0.777 cP at 21 °C |
| Hazards | |
| Main hazards | flammable |
| R-phrases | R10,R37,R51/53,R65 |
| S-phrases | S24,S37,S61,S62 |
| Flash point | 102 °C |
| Related compounds | |
| Related compounds | ethylbenzene toluene benzene |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
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Cumene is the common name for isopropylbenzene, an organic compound that is an aromatic hydrocarbon. It is a constituent of crude oil and refined fuels. It is a flammable colorless liquid that has a boiling point of 152 °C. Nearly all the cumene that is produced as a pure compound on an industrial scale is converted to cumene hydroperoxide, which is an intermediate in the synthesis of other industrially important chemicals such as phenol and acetone.
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[edit] Production
Commercial production of cumene is carried out through the catalytic alkylation of benzene, with the addition of propylene. Solid phosphoric acid (SPA) supported on alumina can also be used as a catalyst, and this was the case prior to the mid-1990s when zeolite-based catalysts made the other technique commercially redundant. [1]
