|Jmol-3D images||Image 1|
|Molar mass||120.19 g mol−1|
|Density||0.862 g cm−3, liquid|
|Melting point||−96 °C (−141 °F; 177 K)|
|Boiling point||152 °C (306 °F; 425 K)|
|Solubility in water||negligible|
|Solubility||soluble in acetone, ether, ethanol|
|Refractive index (nD)||1.4915 (20 °C)|
|Viscosity||0.777 cP (21 °C)|
|Flash point||43 °C (109 °F; 316 K)|
|Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)|
|(what is: / ?)|
Cumene is the common name for isopropylbenzene, an organic compound that is based on an aromatic hydrocarbon with an aliphatic substitution. 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.
Commercial production of cumene is by Friedel–Crafts alkylation of benzene with propylene. Cumene producers account for approximately 20% of the global demand for benzene. Previously, solid phosphoric acid (SPA) supported on alumina was used as the catalyst. Since the mid-1990s, commercial production has switched to zeolite-based catalysts.
However, currently a zeolitic catalyst is being used to carry out the production of cumene and this process is given the name QMAX process. QMAX process represents a new technology in the production of cumene. In this process, the production of cumene is done by a highly robust and stable, zeolitic catalyst. This process provides with the most superior quality of cumene and also a very high yield of about 99.7 wt%. The QZ2000 is non corrosive and re-generable and therefore not much care has to be taken about the catalyst disposal methods. This has been identified as a major problem in other cumene technologies that use aluminum chloride as catalyst.
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 Gas chromatography–mass spectrometry (GCMS) instrument.
- Market Study Benzene, published by Ceresana, July 2011 
- The Innovation Group website, page accessed 15/11/07