Arbutin
Capsaicine
Kojic acid series
Decitabine intermediate
Capecitabine intermediate
Ribose derivative
Glucosan derivative
Steroidhormone series
Dess-Martin periodinane
ß-Arbutin
Arbutin is the active substance originated from natural plant. It can infiltrate into the skin quickly without affecting the concentration of cell multiplication and prevent of tyrosinase in the skin and the forming of melanin. By combined arbutin with tyrosinase, decomposition and drainage of melanin are accelerated, splash and fleck can be got ride of and no side effects are caused. It is one of the widey used materials that are popular at present.
English name : Arbutin, Arbutosie, Ursin, Uresol etc..
CTFA name : Arbutus extract
CAS register name and No. : Arbutin No.497-76-7
Chemical name : hydroquinone-ß-D-glucopyranoside
Molecular formula : C12H16O7
Molecular weight : 272.25
Molecule structure:
Specification :
|
Q/XXHG03-2002 |
Appearance |
white needle crystal |
Assay |
≥99.5% |
Hydroquinone |
≤2 ppm |
Melting point(°C) |
199 ~ 202(±0.5) |
pH value |
5.0~7.0 (1%aqueous solution) |
Clarity of water solution |
Transparency, colorless, none suspended matters |
light transmittance |
≥97.5% (1%aqueous solution) |
Specific optical rotation |
-63~-67 |
Loss on drying |
<0.5% |
Infrared signature peak |
1515cm-1 1220cm-1 1050±(5~8)cm-1 |
Arsenic |
<2 ppm |
Heavy metal |
<10ppm |
Loss on drying |
<0.5% |
Pathogen |
Bacteria count<300CPU Fungus<100CPU |
Caution
1、In the acid situation, Arbutin is easy to be dissolved. Pay attention to controlling the pH value above 6.0;
2、At first, Arbutin should be solved in a small quantity of water at 45℃ and then add it in to the sample at 45℃ after the cream emulsification.
3、The description should involve some antioxidant, for example, sodium hydrogen sudium.
4、While producing, it is able to cooperate with zwitterions surface activities and anions surface activities.
5、 Adding some nature vegetable oli will advance Arbutin’s cooperation and function, including oleic acid and linoleic acid.
6、It will improve absorption of Arbutin, such as Azone and Octadecyl dimethyl amine oxide.
7、Recommend adding amount: 2-7%.