| Transport Package: | Box/Drum |
|---|---|
| Specification: | sodium hyaluronate |
| Origin: | China |
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| Items | Specifications |
| Characters | White or almost white powder |
| Glucuronic acid | ≥44.5% |
| Sodium hyaluronate | ≥92.0% |
| Ph(0.5% aq,sol.,25ºC) | 5.0-8.5 |
| Absorbance (0.5%, aq.sol.25ºC) | A280nm≤0.25 |
| Appearance of solution (0.5% aq.sol.25ºC) | T550nm≥99.0% |
| Loss on drying | ≤10.0% |
| Molecular weight | ≥2,000,000 |
| Intrinsic viscosity | Measured value |
| Kinematic viscosity | Measured value |
| Protein | ≤0.1% |
| Heavy metal (as pb) | ≤20ppm |
| Bacteria counts | ≤100cfu/g |
| Mold & yeast | ≤50cfu/g |
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