C₇H₁₂N₂O₄

Appearance:White crystalline powder
Specific Rotation:+11.5~+13.0^o (c=2, H₂O)
Transparence:>98%
Chloride:<0.04%
Salt of Aminonium:<0.1%
Salt of Sulphur:<0.048
Fe:<30 ppm
Heavy Metals:<10 ppm
As:<2 ppm
Loss on Dryding:<0.6%
Residue on Ignition:<0.1%