Solubility:Freely soluble in water, and in ethanol.Melting Point:128-131°CHeavy Metals:≤0.003%Infrared Spectrum:Conforms to structureLoss on Drying:≤0.5%pH:6.0-7.5Residual Solvents:Methanol: ≤3000 ppmRelated Substances:≤0.25% (by TLC)Sulfated Ash:≤0.1%Storage and Stability:Store at 4°C Stable for 6 months after receipt.