Alpha-arbutin (4-hydroxyphenyl-α-D-glucopyranoside) is a pure, water-soluble, biosynthetic active ingredient. Alpha-arbutin is a skin-lightening ingredient that is widely used in cosmetics and skincare products. Additionally, alpha-arbutin has antioxidant properties that help protect the skin against oxidative stress and damage from environmental factors.
| Appearance | White crystalline powder |
| analysis | 99.0% min. |
| Melting point | 202~207℃ |
| Clarity of the water solution | Transparency, colorless, no floating substances |
| pH value (1% in water) | 5.0~7.0 |
| Specific optical rotation | 【ɑ】D20=+176~184° |
| Arsenic | Maximum 2 ppm. |
| Hydroquinone | Maximum 10 ppm. |
| Heavy metals | Maximum 10 ppm. |
| Loss on drying | Maximum 0.5%. |
| Inflammation of residues | Maximum 0.5%. |
| Pathogen | Bacteria: maximum 100 cfu/g. Fungi: maximum 100 cfu/g. |
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