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beta arbutin arbutin alpha arbutin
inhibits formation of melanin, splash and fleck can be removed
Structural Formula of beta arbutin:
Specification of beta arbutin
Property | Specification |
Character | White fine power or crystals |
Assay(HPLC) | 97∽102% |
Melting point | 199∽201(±0.5)℃ |
Specific optical rotation | [a]D20= -62.0°∽-68.0° |
Infrared characteristic peak | |
Solubility | Soluble in water、alcohol |
Transparency in water | Transparent colorless no suspended |
PH(1% water solution) | 5.0∽7.0 |
Loss on drying | Max. 0.5% |
Sulphated ash | Max. 0.1% |
Heavy metals | Max. 10PPM |
Arsenic | Max. 1PPM |
Plumbum | Max. 2PPM |
Microbiological control | |
Total plate count | Max. 1000cfu/g |
Yeast & mold | Max. 100cfu/g |
Hydroquinone | Max. 10ppm |
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