TRANS-1,4-CYCLOHEXANE DIISOCYANATE Chemical Properties Melting point 59-62 °C(lit.) Boiling point 145-146°C 32mm density 1.2265 (rough estimate) vapor pressure <0.02 mm Hg ( 20 °C) refractive index 1.6180 (estimate) Fp 145-146°C/32mm Water Solubility Hydrolyzes in water.