Quality standard: BP98/USP24Appearance: White or almost white crystalline powderIdentification: ConformsAssay: 97.0%-103.0%Melting point: 128-131Specific rotation: +186- +194(BP98) +175- +183(USP24)Loss on drying: 0.5%max.Residue on ignition: NegligibleRelated substance: Individual impurity: 1.0% maxTotal impurities: 2.0% maxPacking: 25kgs N.W. in cardboard drum or 10kgs N.W. in carton