Optical Rotation, [a]D20:+108.0 to +114.0º (C=2 in H2O)Identification:A blue color gradually develops. Condensation Products: ≤ 0.80 (at 285nm)Solubility:Soluble in water and DMSO, not soluble in acetone.Crystallinity:To pass testpH:5.5-6.5 (5% in water)Loss on Drying:≤ 0.5%Residual Solvents:Ethanol: ≤5000 ppm Acetone: ≤5000 ppmResidue On Ignition:≤ 1.0%Storage and Stability:Store at 4ºC. Stable for 6 months after receipt.