Mesitylene
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| Mesitylene | |
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| Chemical name | 1,3,5-Trimethylbenzene |
| Other names | Mesitylene sym-Trimethylbenzene |
| Chemical formula | C9H12 |
| Molecular mass | 120.19 g/mol |
| CAS number | [108-67-8] |
| Density | 0.8637 g/cm3 at 20 °C |
| Melting point | -44.8 °C |
| Boiling point | 164.7 °C |
| SMILES | c1(C)cc(C)cc(C)c1 |
| Disclaimer and references | |
In organic chemistry, mesitylene or 1,3,5-trimethylbenzene (C9H12) is an aromatic hydrocarbon with three methyl substituents attached to the benzene ring. It is prepared from distillation of acetone with sulfuric acid or by the trimerization of propyne in sulfuric acid, which in both cases acts as a homogeneous catalyst and dehydrating agent. It is commonly used as a solvent in research and industry. Mesitylene is flammable and an irritant.
In the electronics industry, mesitylene has also been used as a developer for photopatternable silicones due to its solvent properties. Mesitylene has a very low freezing point.
1,3,5-Trimethylbenzene is also a major urban volatile organic compound (VOC) which results from combustion. It plays a significant role in aerosol and ozone formation as well as other atmospheric reactions.
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