CAS No.: 9004-61-9 (Hyaluronic Acid); 9067-32-7 (Sodium Hyaluronate) 
EINECS: 232-678-0
Appearance: White powder  
D-glucuronic Acid: Not less than 42%  
Transparency: Not less than 98% (0.1% Solution)  
Protein: Not more than 0.1% 
pH(0.1% Solution): 5.5~7.5  
Loss on drying: Not more than 10% 
Hyaluronic Acid (HA) is a mucopolysaccharide composed of repeat disaccharide units of N-acetylglucosamine and glucuronic acid. The commercial HA is commonly a sodium salt, called sodium hyaluronate. HA is widely found in the extracellular matrix of animal tissues and vitreous humor. Its main biological role is water retention and lubrication.

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