1,2,4-Trimethylbenzene
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Names | |||
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IUPAC name
1,2,4-Trimethylbenzene
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Other names
Pseudocumene,
Asymmetrical trimethylbenzene, psi-cumene |
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Identifiers | |||
95-63-6 | |||
ChEBI | CHEBI:34039 | ||
ChemSpider | 6977 | ||
Jmol 3D model | Interactive image | ||
KEGG | C14533 | ||
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Properties | |||
C9H12 | |||
Molar mass | 120.19 g/mol | ||
Appearance | Colorless liquid | ||
Density | 0.8761 g/cm3 | ||
Melting point | −43.78 °C (−46.80 °F; 229.37 K) | ||
Boiling point | 169 to 171 °C (336 to 340 °F; 442 to 444 K) | ||
Vapor pressure | {{{value}}} | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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verify (what is ?) | |||
Infobox references | |||
1,2,4-Trimethylbenzene is an organic compound with the chemical formula C6H3(CH3)3. Classified as an aromatic hydrocarbon, it is a flammable colorless liquid with a strong odor. It is nearly insoluble in water but soluble in organic solvents. It occurs naturally in coal tar and petroleum (about 3%).
Production
Industrially, it is isolated from the C9 aromatic hydrocarbon fraction during petroleum distillation. Approximately 40% of this fraction is 1,2,4-trimethylbenzene. It is also generated by methylation of toluene and xylenes and the disproportionation of xylene over aluminosilicate catalysts.[2]
Uses
Pseudocumene is a precursor to mellitic anhydride, from which high performance polymers are made. It is also used as a sterilizing agent and in the manufacture of dyes, perfumes, and resins. Another major use is as a gasoline additive.[3]
Niche
1,2,4-Trimethylbenzene dissolved in mineral oil is used as a liquid scintillator.
See Also
References
- ↑ Merck Index, 11th Edition, 7929
- ↑ Karl Griesbaum, Arno Behr, Dieter Biedenkapp, Heinz-Werner Voges, Dorothea Garbe, Christian Paetz, Gerd Collin, Dieter Mayer, Hartmut Höke "Hydrocarbons" in Ullmann's Encyclopedia of Industrial Chemistry 2002 Wiley-VCH, Weinheim. doi:10.1002/14356007.a13_227
- ↑ Lua error in package.lua at line 80: module 'strict' not found.