Chemical Properties of «alpha»-Ionone (CAS 30685-95-1)


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InChI Key
Molecular Weight1
Other Names
  • (3E)-4-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-3-buten-2-one
  • (E)-«alpha»-Ionone
  • 3-Buten-2-one, 4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-, (3E)-
  • 3-Buten-2-one, 4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-, (E)-
  • 3-Buten-2-one, 4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-, (E)-(.+/-.)-
  • 3-Buten-2-one, 4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-, trans
  • 4-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-3-buten-2-one
  • 4-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-3-buten-2-one, (E)-
  • 4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one («alpha»-ionone)
  • 4-(2,6,6-trimethylcyclohex-2-ene-1-yl)-but-3-ene-2-one
  • trans-4-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-3-buten-2-one
  • trans-«alpha»-Ionone
  • «alpha»-(E)-Ionone
  • «alpha»-Cyclocitrylideneacetone

Physical Properties

Property Value Unit Source
Δcliquid -7697.30 kJ/mol NIST
Δf 41.46 kJ/mol Joback Calculated Property
Δfgas -211.48 kJ/mol Joback Calculated Property
Δfus 18.67 kJ/mol Joback Calculated Property
Δvap 51.16 kJ/mol Joback Calculated Property
logPoct/wat 3.514 Crippen Calculated Property
Pc 2239.76 kPa Joback Calculated Property
Tboil 574.13 K Joback Calculated Property
Tc 792.17 K Joback Calculated Property
Tfus 321.44 K Joback Calculated Property
Vc 0.665 m3/kg-mol Joback Calculated Property

Temperature Dependent Properties

Property Value Unit Temperature (K) Source
Cp,gas 438.46 J/mol×K 574.13 Joback Calculated Property

Molecular Descriptors

Joback and Reid Groups
-CH3 4
=CH- (ring) 1
=C< (ring) 1
=CH- 2
>C< (ring) 1
>C=O (nonring) 1
>CH- (ring) 1
-CH2- (ring) 2

Similar Compounds

Ionone. «alpha»-Ionone. 1-Penten-3-one, 1-(2,6,6-trimethyl-2-cyclohexen-1-yl)-. Methylionone 4. Methyl ionone 3. (E)-4-((1R,5S)-2,5,6,6-Tetramethylcyclohex-2-en-1-yl)but-3-en-2-one-rel-. 6-Methyl ionone. trans-«alpha»-Irone. cis-«alpha»-Irone. «alpha»-Irone. Allyl ionone 1. Allyl ionone 3. Allyl ionone 2. 3-Buten-2-one, 4-(1,2,6,6-tetramethyl-2-cyclohexen-1-yl)-. Allyl «alpha»-ionone.

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