98%min white powder 25kg/drum PPT delivery.Melting point: 152-156 Specific rotation: -16--19 Acidity: PH: 4.5-6.5 Chloride: ≤0.02% Content of chlorine: ≥4.8% Relevant substances: Total quantity of impurity spots ≤2% Drying weight loss: 0.5% Burnt residue: ≤0.1% Heavy metal: ≤20ppm Content: ≥98%