China High Molecular Weight Cosmetic Raw Materials Hyaluronic Acid Acide Hyaluronique Powder, Find details about China Cosmetic Grade Sodium Hyaluronate, Hyaluronic Acid from High Molecular Weight Cosmetic Raw Materials Hyaluronic Acid Acide Hyaluronique Powder
Items | Specifications | Results |
Appearance | White or almost white powder or fibrous aggregate | White Powder |
Identification
B.Reaction of sodium | The IR spectrum of the sample exhibits maxima at the same wavelength as that of Ph.Eur. reference spectrum of Sodium Hyaluronate Positive | Comply Positive |
Appearance of solution | Clear and the absorbance is NMT 0.01 at 600 nm | Clear,A600 nm= 0.002 |
pH | 5.0 8.5 (0.5% solution) | 7.2 |
Intrinsic viscosity | Report the test value | 2.28 m3 /kg |
Molecular weight | Report the test value | 1.43 ×106 Da |
Nucleic acids | The absorbance is NMT 0.5 at 260 nm | 0.007 |
Protein | ≤0.1%(on the dried substance) | <LOD(0.03%) |
Chlorides | ≤0.5% | <0.5% |
Heavy metals | ≤10 ppm | <10 ppm |
Iron | ≤80 ppm (on the dried substance) | <80 ppm |
Loss on drying | ≤20.0% | 8.6% |
Assay | 95.0% 105.0% (on the dried substance) | 100.9% |
Residual solvents:Ethanol | ≤0.5% | 0.12% |
Microbial contamination | ≤100 cfu/g | <10 cfu/g |
Bacterial Endotoxins | <0.5 IU/mg | <0.5 IU/mg |