Molecular Formula: C12H22O11; GR (AR) grade; CAS No.: 57‐50‐1Bottom of F; Solubility in water: to past test; Specific rotation [α] after drying D20: +66.3~+66.7o; Residue on ignition (sulfate): max. 0.01%; Acid (as CH3COOH): max. 0.006%; Chloride (Cl): max. 5ppm; Loss on drying(105C): max0.1%; Sulfate (S04);max0.003%; Calcium (Ca):max0.003%; Lead(Pb): max.3ppm; Iron (Fe):max.5ppm; Invert sugar:max0.05%