Item Standard Appearance White almost white granules powder Specific rotation[α]20/D (C=8 in 6N HCl) +25°to +27° Chloride (Cl) Not more than 200ppm State of Solution Clear colorless Sulfate (SO4) Not more than 300ppm Heavy metal(Pb) Not more than 20ppm Ammonium(NH4) Not more than 100ppm TLC Two points Loss on drying Not more than 0.5% Residue on ignition(sulfated) Not more than 0.1% Assay 98.5% to 101.5% PH 6.0 to 7.0
