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EntityQ2672403· pop 9· linked from 112 articles

Also known as cymene, methylcumenes, isopropyltoluenes

Cymene describes organic compounds with the formula . Three isomers exist: 1,2- 1,3-, and 1,4-. All are colorless liquids, immiscible in water, with similar boiling points. They are classified as aromatic hydrocarbons. They bear two substituents: an isopropyl () group and a methyl group. {|class="wikitable" style="text-align:center; font-size:90%" | colspan="4" class="colspan="4"" | Cymenes |- ! Name | o-Cymene || m-Cymene || p-Cymene |- ! Structural formula | 110px || 110px || 90px |- ! CAS number | 527-84-4 || 535-77-3 || 99–87–6 |- ! melting point (°C) | −71.54 || −63.75 || −67.94

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Cymenes
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Cymene describes organic compounds with the formula . Three isomers exist: 1,2- 1,3-, and 1,4-. All are colorless liquids, immiscible in water, with similar boiling points. They are classified as aromatic hydrocarbons. They bear two substituents: an isopropyl () group and a methyl group. {|class="wikitable" style="text-align:center; font-size:90%" | colspan="4" class="colspan="4"" | Cymenes |- ! Name | o-Cymene || m-Cymene || p-Cymene |- ! Structural formula | 110px || 110px || 90px |- ! CAS number | 527-84-4 || 535-77-3 || 99–87–6 |- ! melting point (°C) | −71.54 || −63.75 || −67.94 |- ! boiling point (°C) | 178.15 || 175.05 ||177.10 |}

==Production and reactions== m- and p-Cymene are prepared by alkylation of toluene with propylene:

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