English name: Arbutin, Arbutosie, Ursin, Uresol etc...
CTFA name: Arbutus extract
CAS register name and No.: Arbutin No. 497-76-7
Chemical name: Hydroquinone-β-D-glucopyranoside
Molecular formula: C12H16O7
Molecular weight: 272.25
Alpha-arbutin:
Item Specification
[Description]: White crystals or crystalline powder, IR spectrum conforms
[Specific rotation[α]D20]: +174.0 degree~+186.0 degree
[Assay (HPLC)]: 99.5% min.
[Loss on drying]: 0.5% max.
[Residue on ignition]: 0.5% max.
[pH]: 5.0~7.0
Standard: In-house
Package: 1kg/tin or 5kg/tin
Shiseido patented the use of Arbutin in skin-whitening cosmetics. Some companies bypass the patents by using Arbutin-containing plant extracts such as bearberry. There is inadequate research data showing that Arbutin extracted from plants has any skin whitening effects.
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Beta -Arbutin
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CAS No.:479-76-7
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Synonym
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4-Hydroquinone ß-D-glucopyranoside
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Formula
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C12H16O7
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Molecular
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272.25
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Appearance
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White needle or crystal or powder
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Assay
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≥99.5%
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Melting point
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198-202 celsius degree
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PH value(in 1%solution)
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5.0-7.0
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Specific rotation
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-63 to -67
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Infrared characteristic peak value
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1512cm-1 1219cm-1
1049cm-1
5-7)cm-1
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Loss on drying
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≤0.5%
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Residus on lgnition
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≤0.5%
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Heavy metals(Pb)
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≤10ppm
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Arsenic
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≤2ppm
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Hydroquinone
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None
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