Appearance: white or almost white powder Sodium hyaluronate (dry basis): 90%-105% Glucuronic acid:nlt42.0% Ph(0.1% water solution) :6.0-7.5 Molecular weight:(0.8- 2.0)*106 Protein:nmt0.1% Transparency (0.1% solution): nlt 99% loss on drying: nmt 10.0% Heavy metals (as pb): nmt 20ppm Arsenic nmt 2ppm Bacteria count: nmt 100cfu/g Mold & yeast: nmt 10cfu/g Pseudomonas aeruginosa: negative Staphylococcus aureus: negative. 5kg/drum.
