Items Standard Description: White fine powder/Crystal Identification: Positive Melting point: 205.0-209.0 Acidity (PH): 2.4-3.0 Loss on drying: 0.2% max Residue on ignition: 0.10% max Sulphated ash: 0.10% max Heavy metals: 10ppm max Assay 99.0%~101.0% Clarity and colour of solution: Meet the requiremtns. Chloride content: 16.9%~17.6% Related substances: Meet the requiremtns. Organic volatile impurities: Meet the requiremtns.