CAS No.:84380-01-8
Other Names:alpha-Arbutin
MF:C12H16O7, C12H16O7
EINECS No.:617-561-8
Synonyms:AlphaArbutinPowder; 4-hydroquinone-alpha-d-glucopyranoside; alpha-arbutin; a-Arbutin; HydroquinoneO-α-D-Glucopyranoside; 4-Hydroxyphenyla-D-glucopyranoside; (2R,3S,4S,5R,6S)-2-(HYDROXYMETHYL)-6-(4-HYDROXYPHENOXY)TETRAHYDROPYRAN-3,4,5-TRIOL; 4-hydroxyphenylalpha-D-glucopyranoside
α-Arbutin is a glycosylated hydroquinone and an anomer of naturally occurring arbutin. It is a potent inhibitor of tyrosinase, a vital enzyme involved in epidermal melanin biosynthesis. α-Arbutin finds extensive application as a powerful skin-lightening agent in cosmetic industries.
| Test items |
Detection Indicator |
Test data |
|
Appearance |
White crystals or crystalline powder |
White crystals powder |
|
Loss on drying |
<0.5% |
0.1% |
|
pH |
5.0~ 7.0 |
6.50 |
|
Residue on ignition |
<0.5% |
0.03% |
|
Specific rotation |
+174.0°~ +186.0° |
+179.40° |
|
Melting point |
202.0 °C ~ 212.0 °C |
204.5 °C~ 205.5°C |
|
Transmittance |
≥95.0% |
98.4% |
|
As |
≤2ppm |
<2 ppm |
|
Pb |
≤10 ppm |
<10 ppm |
|
Assay |
≥99.5% |
100.0% |
|
Hydroquinone |
Negative |
Negative |
α-Arbutin may be used as an analytical reference standard for the determination of the analyte in cosmetics by high-performance liquid chromatography with UV detection (HPLC-UV) method.
25kgs/drum, 9tons/20’containerPacking
AlphaArbutinPowder; 4-hydroquinone-alpha-d-glucopyranoside; alpha-arbutin; a-Arbutin; HydroquinoneO-α-D-Glucopyranoside; 4-Hydroxyphenyla-D-glucopyranoside; (2R,3S,4S,5R,6S)-2-(HYDROXYMETHYL)-6-(4-HYDROXYPHENOXY)TETRAHYDROPYRAN-3,4,5-TRIOL; 4-hydroxyphenylalpha-D-glucopyranoside
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