Sodium Hyaluronate is the sodium salt form of hyaluronic acid (HA) and the most common form of HA in commercial applications. It is a linear polysaccharide naturally present in human connective tissues such as skin, synovial fluid, and vitreous humor. It has strong water absorption and moisturizing ability, as well as biocompatibility. Currently, it has become a core functional ingredient in cosmetics, health products, and other fields, especially widely used in the field of "moisturizing and repairing".
Item | Specification | Test Result |
Viscosity(1%sol., 25°C, mpa.s) | 200-500 | 420 |
D.S(Degree of substitution) | ≥ 0.6 | 0.82 |
pH(1%solution) | 6.0-8.5 | 6.78 |
Moisture (%) | ≤10.0 | 6.62 |
Chloridecontent(%) | ≤ 1.2 | 0.86 |
Heavy metal | ≤ 15 ppm | ≤ 15 ppm |
Pb | ≤ 5 ppm | ≤ 5 ppm |
As | ≤ 2 ppm | ≤ 2 ppm |
Yeast & Mould | ≤100 cfu/g | Conforms |
Salmonella | Negative | Negative |