Topic summary

P-Cymene

P-Cymene
Names Preferred IUPAC name
1-Methyl-4-(propan-2-yl)benzene
Other names
para-Cymene
4-Isopropyltoluene
4-Methylcumene
Paracymene
Identifiers
3D model (JSmol)
1903377 ChEBIChEMBLChemSpiderECHA InfoCard100.002.542EC Number
  • 202-796-7
305912 KEGGRTECS number
  • GZ5950000
UNIIUN number2046
  • InChI=1S/C10H14/c1-8(2)10-6-4-9(3)5-7-10/h4-8H,1-3H3
    Key: HFPZCAJZSCWRBC-UHFFFAOYSA-N
  • InChI=1/C10H14/c1-8(2)10-6-4-9(3)5-7-10/h4-8H,1-3H3
    Key: HFPZCAJZSCWRBC-UHFFFAOYAD
  • c1cc(ccc1C(C)C)C
Properties C10H14Molar mass134.222 g·mol Appearance Colourless liquid Density0.857 g/cm Melting point−68 °C (−90 °F; 205 K) Boiling point177 °C (351 °F; 450 K) 23.4 mg/L −1.028×10 cm/mol1.4908 (at 20 °C) Hazards GHS labelling: DangerH226, H304, H411P210, P233, P240, P241, P242, P243, P273, P280, P301+P310, P303+P361+P353, P331, P370+P378, P391, P403+P235, P405, P501Flash point47 °C (117 °F; 320 K) 435 °C (815 °F; 708 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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p-Cymene is a naturally occurring aromaticorganic compound. It is classified as an alkylbenzene related to monocyclic monoterpenes. Its structure consists of a benzene ring para-substituted with a methyl group and an isopropyl group. p-Cymene is insoluble in water, but miscible with organic solvents.