Hyaluronic acid
Introduction:
Hyaluronic acid is a mucopolysaccharide which is widely found in the extra-cellular matrix of animal tissues and the capsule of some streptococcus. It has important physiological and harmacological action.
HA is a linear polysaccharide composed of repeated disaccharide units. Its molecular weight is 200~7000 KDa.
Moisturiziing Efficacy:
Specialized in its moisturizing efficacy and chemical properties, it is now well known in the world as the best Natural moisturizing factor.
Cosmetic grade sodium hyaluronate:
Characteristics:
White or almost white, very hygroscopic grain or powder, without odor,turn to clear solution when dissolved in water; insoluble in ethanol, acetone and aether.
Examination:
|
PH
|
6.0~7.5
|
|
Transparency
|
≥99.0%
|
|
Loss on drying
|
≤10.0%
|
|
Kinematic viscosity
|
Practical value
|
|
Molecular weight
|
≥1.0 x 106
|
|
Protein
|
≤0.05%
|
|
Heavy metals
|
≤20ppm
|
|
Glucuronic acid
|
≥43%
|
|
Bacteria counts
|
< 10 cfu/g
|
|
Mold & Yeast
|
< 10 cfu/g
|
|
Staphylococcus aureus
|
Negative
|
|
Pseudomonas aeruginosa
|
Negative
|
Food grade sodium hyaluronate
Characteristics:
White or almost white, very hygroscopic grain or powder, without odor,turn to clear solution when dissolved in water; insoluble in ethanol, acetone and aether.
Examination:
|
PH
|
6.0~8.0
|
|
Loss on drying
|
≤10.0%
|
|
Residue on ignition
|
≤13.0%
|
|
Heavy metals
|
≤20ppm
|
|
Arsenicum
|
≤2ppm
|
|
Glucuronic acid
|
≥42%
|
|
Bacteria counts
|
< 10 cfu/g
|
|
Mold & Yeast
|
< 10 cfu/g
|
|
Staphylococcus aureus
|
Negative
|
|
Pseudomonas aeruginosa
|
Negative
|
|
