Appearance
White to off-white powder
Specific Rotation [20/D]
(C=2 in C2H5OH)
+22 to +26º
Melting point
187-190¡æ
Heavy Metals (Pb)
Not more than 20 PPM
Arsenic (As2O3)
Not more than 2 PPM
Loss on Drying
Not more than 0.50%
Residue on Ignition
Not more than 0.3%
Assay
97.5% to 102.5%