Appearance A white or white like crystalline powder Conform Identification IR & UV & HPLC Conform Melting point 228℃ to245 ℃ 235℃ to 237℃ Residue on ignition 0.25% max 0.05% Heavy Metals 20ppm max Conform Loss on drying 1.0%min 0.04% Water 0.5% max 0.14% HPLC ≥99.00% 99.50% Single impurity 0.20% max 0.15% Assay (by HPLC) 98.0% to 102.0% 99.10% Conclusion Comply with factory standard