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Product overview

Isophorone (IPHO) is used in many end markets such as agrochemicals, fine chemistry, coating, inks, epoxy systems, isocyanates. IPHO, an unsaturated cyclic ketone, is a raw material in many chemical synthesis: IPDA/IPDI (isophorone diamine / isophorone diisocyanate), PCMX (antimicrobial derivatives of 3,5-xylenol), Trimethylcyclohexanone…

IPHO is also used as a solvent, especially in coatings, inks and agrochemicals.

Geographic availability
  • Worldwide
Chemical name : 3,5,5-trimethyl-2-cyclohexene-1-one
Common name : IPHO


  • Purity (% by weight) : ≥ 99,0 (isomer mixture*)

  • Appearance at 20°C : clear liquid free from suspended materials

  • Density at 20°C (g/cm3) : 0,919 - 0,922

  • Boiling point at 1013 Pa : 215,2°C

  • Flash point (closed cup) : 85 °C

  • Water solubility at 20°C : IPHO in water (mass fraction) : 1,2%; water in IPHO (mass fraction) : 4,3% 

  • Hansen Solubility Parameters at 25°C: δt = 19,9; δd = 16,6; δp = 8,2; δh = 7,4



* Isophorone consists essentially of 3,5,5-trimethyl-2-cyclohexene-1-one (α-isophorone or IPHO-α) in which less than
1 % of the isomer 3,5,5-trimethyl-3-cyclohexene-1-one (β-isophorone or IPHO-β) is present.


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