Specification sheet of N-acetyl-d-glucosamine Appearance: White crystalline powder Test: Characteristic Odor: Characteristic Melting point: 196∽205°C Residue on ignition: Not more than 0.5% Specific rotation[α]D20: 39.0∽43.0? Loss on drying: Not more than 0.5% Chloride: Not more than 1% Iron: Not more than 10ppm Heavy metals: Not more than 10ppm Arsenic: Not more than 1ppm Assay: Not less than 99% Total Plate Count: 100cfu/g Yeast and Mold: 10cfu/g