CAS number 108-67-8 YesY
PubChem 7947
ChemSpider 7659 YesY
EC number 203-604-4
KEGG C14508 YesY
ChEBI CHEBI:34833 YesY
Jmol-3D images Image 1
Molecular formula C9H12
Molar mass 120.19 g/mol
Density 0.8637 g/cm³ at 20 °C
Melting point

-44.8 °C

Boiling point

164.7 °C

MSDS Safety data from Oxford University
 YesY (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Mesitylene or 1,3,5-trimethylbenzene (C9H12) is an aromatic hydrocarbon with three methyl substituents attached to the benzene ring. It is prepared by distillation of acetone with sulfuric acid or by trimerization of propyne in sulfuric acid, which, in both cases, acts as a catalyst and dehydrating agent. It is commonly used as a solvent in research and industry. It is flammable and an irritant; it is a low-freezing liquid.

In the electronics industry, mesitylene has also been used as a developer for photopatternable silicones due to its solvent properties.

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 tropospheric ozone formation as well as other reactions in atmospheric chemistry.

The mesityl group (Mes) is a functional group found as an attachment in many organic compounds.

The three aromatic hydrogen atoms of mesitylene are in identical chemical shift environments. Therefore, they only give a single peak near 6.8 ppm in the 1H NMR spectrum. For this reason, mesitylene is sometimes used as an internal standard in NMR samples that contain aromatic protons.[1]


  1. ^

Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Mesitylene — Mésitylène Mésitylène Général Synonymes 1,3,5 triméthylbenzène No CAS …   Wikipédia en Français

  • Mésitylène — Général Synonymes 1,3,5 triméthylbenzène No CAS …   Wikipédia en Français

  • Mesitylene — Me*sit y*lene, n. (Chem.) A colorless, fragrant liquid, {C6H3(CH3)3}, of the benzene series of hydrocarbons, obtained by distilling acetone with sulphuric acid. {Me*sit y*len ic}, a. [1913 Webster] …   The Collaborative International Dictionary of English

  • mésitylène — ● mésitylène nom masculin Triméthylbenzène C9H12, présent dans les goudrons de houille et dans certains pétroles. (On peut l obtenir par condensation de l acétone en milieu basique.) …   Encyclopédie Universelle

  • mesitylene — [mi sit′ l ēn΄] n. [mesityl (< Gr mesitēs, mediator < mesos,MID1 + YL) + ENE] a colorless, aromatic hydrocarbon, C6H3 (CH3) 3, found in coal tar or made by distillation of a mixture of sulfuric acid and acetone …   English World dictionary

  • mesitylene — mezitilenas statusas T sritis chemija formulė (CH₃)₃C₆H₃ atitikmenys: angl. mesitylene rus. мезитилен ryšiai: sinonimas – 1,3,5 trimetilbenzenas …   Chemijos terminų aiškinamasis žodynas

  • mesitylene — /mi sit l een , mes i tl /, n. Chem. a colorless, liquid, aromatic hydrocarbon, C9H12, occurring naturally in coal tar and prepared from acetone: used chiefly as a chemical intermediate. [1830 40; mesityl (see MESITYL OXIDE) + ENE] * * * …   Universalium

  • mesitylene — noun The aromatic hydrocarbon 1,3,5 trimethylbenzene that is present in coal tar and crude oil; it has some use as a solvent …   Wiktionary

  • mesitylene — me·sit·y·lene mə sit əl .ēn n an oily hydrocarbon C9H12 that is found in coal tar and petroleum or made synthetically and is a powerful solvent * * * me·sit·y·lene (mə sitґə lēn) a triply methylated derivative of benzene occurring… …   Medical dictionary

  • mesitylene — me·sit·y·lene …   English syllables

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.