Appearance: Off-White to Light Tan Powder. APHA Color, 1% Aqueous Solution: = 200. Assay (Titration): 98.0 - 102.0 %. Bioburden: = 100 CFU/g. Endotoxin : = 0.04 EU/mg. Heavy Metals (as Pb): = 15 ppm. Identification (IR): Conforms to known structure. Moisture : 12.0 - 16.0 %. pH (1% Solution in Water)@ 25 oC: 10.5 - 11.5. Solubility (10% solution in H2O): Clear, Complete Yellow Solution. Solubility, 1% solution in H2O: Clear, Complete Pale Yellow Solution. Specific Rotation: -14.4 - - 12.6 °. BSE/TSE Free: BSE/TSE Free.