Be used for benzene, naphthyl hydroxide, alkyl naphthalene concrete apposition agent etc. Appearance A B C Crystallizing point ℃ 78.3 78 77.5 Evaporation residue % 0.04 0.04 0.06 Ash content % 0.01 0.01 0.02 Content % 96.05 96.10 96.13