1,Grade:Food grade,Cosmetic Grade 2,CAS no: 9004-61-9 3,Appearance: White powder Hyaluronic acid (HA) is a straight chain ... macromolecular mucopolysaccharide composed Of repeat disaccharide units of glucuronic acid and N-acetylglucosamine. It widely consists in the extracellular ... a sodium salt, called sodium hyaluronate, habitually called hyaluronic acid. HA is a new biological at home and abroad. ...