99.5% Pure Beta Arbutin Powder White Crystalline for Skin Whitening
Specifications:
| Items | Specification | Results |
| Appearance | White crystalline powder | Conform |
| Assay (HPLC) | 99.5%min. | 99.9% |
| Hydroquinone | 10ppm max. | Conform |
| Melting point(°C) | 199-201±0.5 | 199.7-200.6 |
| Loss on drying (%) | ≤0.5% | 0.25% |
| Clarity of water solution | Transparency, colorless, none suspended matters | Conform |
| PH value of 1% aqueous solution | 5.0---7.0 | 6.21 |
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