Test Items

Test Standards

Test Results

Characters

White or almost white powder

White powder

Sodium hyaluronate (dry basis) 

90%-105%

94..64%

Glucuronic Acid

≥42%

45.75.%

pH(0.1% Solution)

6.0-7.5

6.5

Molecular Weight

≥0.5×10⁶Da

1.38×10⁶Da

Protein

≤0.1%

0.02%

Transparency (0.1% Solution)

≥99%

99.9%

Loss on Drying

≤10.0%

5.06%

Heavy Metal (as Pb)

≤20ppm

≤20ppm

Arsenic

≤2ppm

≤2ppm

Bacteria Count

≤100cfu/g

<100cfu/g

Mold & Yeast

≤10cfu/g

<10cfu/g

Pseudomonas aeruginosa

Negative

Negative

Staphylococcus aureus

Negative

Negative

Conclusion

 Up to standard