chemical name : 3-isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanate alias : 3-isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanate; 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane; ipdi ipdi products are mixtures containing 75% cis and 25% trans isomers. molecular formula c12h18n2o2 relative molecular mass 222.29.cas cas no. 4098-71-9. einecs no. 223-861-6 physical and chemical properties isophorone diisocyanate ipdi is colorless or light yellow liquid with camphor-like odor, completely miscible with esters,...