Product name: beta arbutin Synonyms: β-arbutin INCI name: - CAS No.: 497-76-7 EINECS: 207-850-3 Quality: assay 99.5% by HPLC Molecular formula: C12H16O7 Molecular weight: 272.25   Description: β-Arbutin is used as a whitening ingredient for controlling the generation of melanin pigments, which are substances causing discoloration and freckles. It is known as a substance contained in ericaceous herbs called bearberry leaf. Discoloration and freckles occur due to reactive oxygen produced in skin by exposure to UV in sunlight, stress, atmospheric pollution, etc., which activates tyrosinase and the activated enzyme promotes the conversion of tyrosine in melanocytes (pigment cells) to melanin pigments. β-Arbutin is said to demonstrate whitening effects by reducing the production of melanin pigments by working directly on tyrosinase in melanocytes.   Specification (assay 99.5% by HPLC): Test Items Standard Appearance White crystalline powder Assay 99.5% min Melting point 198.5-201.5℃ Clarity of water solution Transparency, colorless, none suspended matters PH value of 1% aqueous solution 5-7 Specific optical rotation [α]D20=-66±2° Arsenic ≤2ppm Hydroquinone ≤10ppm Heavy metal ≤10ppm Loss on drying ≤0.5% Ignition residue ≤0.5% Pathogen Bacteria ≤300cfu/g Fungus ≤100cfu/g   Production capacity: 1000kg/month Storage condition: Stored in cool, dry place, room temperature. Package material: drum Package size:1kg/drum, 5kg/drum, 10kg/drum, 25kg/drum