Appearance:  Yellow to orange crystalline powder            
Assay: 99.5%            
Water：0.04%            
Residue on ignition:0.04%            
Heavy metals:10 ppm max            
residual solvents :Ethanol  43 ppm; Ethyl Acetate 4.6 ppm; N-Hexane 0.1 ppm            
Packing: 5kg net/tin inside, 10kg net/paper box            
Applications:  widely used in food, cosmetics, dietary supplements
Molecule Structure: