Have happy fruit flavours colorless flammable liquids. Freezing points - and the boiling point ° C ° C 77.9mm 126, relative density 0.8825 (20/4 ° C), 0.8764 (25/4 ° C), 0.8713 (30/4 ° C), refractive index 1.3951 and flash point (open cups) 33 ° C, vapor pressure ° C kPa (20), QiHuaRe 309.4 1.33 J/g, specific heat capacity (20 ° C) 1.91 (g @ J / ° C). With alcohol, ketone, ether and other organic solvent immiscible with low-level, TongXiWu compared, more difficult soluble in water.