Detailed Product Description

hyaluronic acid, Sodium Hyaluronate (medical Grade),

CHARACTERISTICS:

White or almost white, very hygroscopic grain or powder ,without odor ,turn to clear solution when dissolved in water, insoluble in ethanol , acetone and aether

Examination:

PH;                                        6.0--8.0

Intrinsic viscosity                   >=  1600

sulfate                                 quality to the rule

Light absorbance                  0.25(257nm); <= 0.15 (280nm)

Loss on dtying                       <=8.0%

Residue on ignition                  <=20%

Heavy metals                          <=30ppm

Microbial Examination   :

Bacteria counts                       <=100CFU/g

Mold & Yeast                          <=100CFU/g

Staphylococcus aureus             negative

Pseudomonas aeruginosa          negative

Assay:        

Glucuronic acid :                      >=43.0%