Succinic acid food grade 99.5%: Appearance: Colorless to white crystal or white crystal powderAssay: 99.5%, Melting range: 184.0~187.0 degWater solutioin appearance: Colorless transparent or basically colorless transparent. Chloride: 0.007% max, Sulphate (SO42-): 0.02%max, Heavy metal (Pb2+): 0.001% max, Ferrum content: 0.002% max, Potassium permanganate reducing substances: QualifiedArsenic content (As2O3): 2PPM max.