This is an old revision of this page, as edited by 59.92.246.148 (talk) at 13:34, 17 August 2011. The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.
Revision as of 13:34, 17 August 2011 by 59.92.246.148 (talk)(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff) Not to be confused with cumin or cumulene.
| |||
| Names | |||
|---|---|---|---|
| IUPAC name (1-methylethyl)benzene | |||
| Other names
isopropylbenzene 2-phenylpropane | |||
| Identifiers | |||
| CAS Number | |||
| 3D model (JSmol) | |||
| ChEBI | |||
| ChemSpider | |||
| ECHA InfoCard | 100.002.458 
| ||
| KEGG | |||
| PubChem CID | |||
| RTECS number |
| ||
| UNII | |||
| CompTox Dashboard (EPA) | |||
InChI
| |||
SMILES
| |||
| Properties | |||
| Chemical formula | C9H12 | ||
| Molar mass | 120.195 g·mol | ||
| Appearance | colorless liquid | ||
| Density | 0.862 g cm, liquid | ||
| Melting point | −96 °C (−141 °F; 177 K) | ||
| Boiling point | 152 °C (306 °F; 425 K) | ||
| Solubility in water | insoluble | ||
| Viscosity | 0.777 cP at 21 °C | ||
| Hazards | |||
| Occupational safety and health (OHS/OSH): | |||
| Main hazards | flammable | ||
| Flash point | 43 °C | ||
| Related compounds | |||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa).
 Y verify (what is ?)
Infobox references
| |||
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, primarily phenol and acetone.
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. This process is other wise known as Friedel-Crafts alkylation reaction.
Isopropylbenzene is stable, but may form peroxides in storage if in contact with the air. It is important to test for the presence of peroxides before heating or distilling. The chemical is also flammable and incompatible with strong oxidizing agents. Environmental laboratories commonly test isopropylbenzene using a GCMS instrument.