Product name:alpha arbutin Inci name:4-hydroquinone-alpha-d-glucopyranosidemolecular Cas no. :84380-01-8 Molecular formula: c12h16o7 Molecular weight: 272.26 Main specifications Item index Appearance: white fine powder or crystals Solubility: soluble in water ?alcohol Melting point :202-206(±0.5)? Stability ph: 5 ~ 7 Heavy metals =10ppm Assay =99.50% Application: Skin care, sun care, skin whitening/lightening, treatment for pigmentary disorders such as age spots etc. The reference addition is 0.2~2%.