... Physichochemical PropertyCoal tar has special distinctive odour. Its relative density is 1.18~1.23 and the open flash point ... is at 200°C, and slightly dissolvie in water and Soluble in organic solvent, such as benzene, alcohol, aether, ... 0≤9.07, 5 – 8, 0Density Under 20°C, g/cm31.15-1.121.13-1.221, 185 – 1, 190NaphthaleneContent ...