... 9004-61-9 3,Appearance: White powder Hyaluronic acid (HA) is a straight chain macromolecular mucopolysaccharide composed Of repeat disaccharide ... cord, skin joints synovia and cockscomb, etc.The commercial HA is commonly a sodium salt, called sodium hyaluronate, habitually ... called hyaluronic acid. HA is a new biological at home and abroad. Its ...