Product name |
Sodium hyaluronate cosmetic grade | |
Product description |
White or almost white,very hygrocopic powder or fibrous aggregate | |
Product Benefits |
High molecular weight: forming a dense protective film, long-lasting moisturizing;good recoveringeffect;Medium molecular weight:good moisturizing and lubricity effect,slow release,stable emulsificationeffect;Low molecular weight :skin nutrition effect and lasting moisture effect; Oligo : percutaneous absorption,deep moisturizing,anti-aging and recovery effect after sunburn. | |
Product specification |
Solubility |
Sparingly soluble or soluble in water,practically insoluble in acetone and in anhydrous ethanol |
Identification |
A.Infrared absorption spectrophotometry |
|
B.It gives reaction(a)of sodium |
||
Sodium Hyaluronate |
≥ 95% |
|
Appearance of Solution |
A600nm≤ 0.01 |
|
Nucleic Acids |
A260nm≤ 0.5 |
|
pH (0.5% aq. sol., 25℃) |
5.0-8.5 |
|
Molecular Weight |
3,000-3,000,000 Da |
|
Intrinsic viscosity |
0.19-40.6dL/g |
|
Protein |
≤0.1% |
|
Loss on drying |
≤10.0% |
|
Chlorides |
≤ 0.5% |
|
Iron |
≤ 80ppm |
|
TAMC |
≤100CFU/g |
|
Staphylococcus aureus |
Negative/g |
|
Pseudomonas aeruginosa |
Negative/g |
|
Storage Conditions |
Temperature at 2-10℃ cool and dry place | |
Packing |
According to customer requirements | |
Shelf life |
Two years (unopened packaging) |