Description White to pale yellow crystalline powder. Odorless or has a slight ,characteristic odor. Identity Conforms the test pH 2.8 3.8 Specific Rotation -76° -88° Water Content 9.0% 11.5% Residue of ignition Not more than 0.2% Heavy Metals Not more than0.0020% Related Substances Not more than2.5% Assay 96.5% 102.0% (Calculated on anhydrous substance) Microbic Limitation Quantity of the Mycetes is not more than80/g