| Customization: | Available |
|---|---|
| CAS No.: | 497-76-7 |
| Formula: | C12h16o7 |
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Arbutin is a glycoside; a glycosylated hydroquinon extracted from the bearberry plant in the genus Arctostaphylos among many other medicinal plants, primarily in the family Ericaceae. Applied topically, it inhibits tyrosinase and thus prevents the formation of melanin.
| Item | Specification | Results |
| Appearance | White crystalline powder | White crystalline powder |
| Assay | ≥99.5% | 99.86% |
| Melting point | 199~201±0.5ºC | 199.3-200.7ºC |
| Clarity of water solution | Transparency, colorless, none suspended matters | pass |
| pH value | 5.0~7.0 | 6.09 |
| Specific optical rotation | ( α )D20=-66±2º | -65. 1° |
| Infrared peak value | 1515cm- 1 1220cm- 1 1050cm- 1 ±(5~8) cm- 1 | pass |
| Arsenice | ≤2 ppm | pass |
| Hydroquinon | ≤20 ppm | 0.37 |
| Heavy metal | ≤20 ppm | pass |
| Loss on drying | ≤0.5% | pass |
| Ignition residue | ≤0.5% | pass |
| Pathogen | Bacteria : ≤300cfu/g max Fungus: ≤100cfu/g max |
<20 <20 |
| Conclusion | Conformance | |
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