| Item |
Specification |
Result |
| Appearance |
White crystalline powder |
White crystalline |
| Assay |
99%min |
99.97% |
| Melting point |
110.0-115.0℃ |
113.1-114.2 |
| pH(3% water solution) |
3.5-5.5 |
4.43 |
| Free of VC |
≤10ppm |
Pass |
| Heavy metal |
≤10ppm |
Pass |
| Loss on drying |
≤0.5% |
0.12% |
| Ignition residue |
≤0.2% |
0.05% |
| Conclusion |
Pass |
(1) 3-O-Ethyl-L-ascorbic acid (Vitamin C ethyl ether) as a new whitening agent, it is mainly used in whitening and freckle removing products, anti-aging products, water agent, gel, essence, emulsion, skin cream and so on.
(2) Inhibit the activity of tyrosinase by Cu2+ and block the formation of melanin;
(3) 3-O-Ethyl-L-ascorbic acid has very effective whitening and freckle removal functions (when 2% is added);
(4) Anti-inflammatory caused by sunlight Chemicalbook, 3-O-Ethyl-L-ascorbic acid has a strong antibacterial and anti-inflammatory effect;
(5) Improve dull and dull skin and give skin elasticity;
(6) 3-O-Ethyl-L-ascorbic acid can repair skin cell activity and promote collagen production.
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