Appearance
White fine crystals or White power
Specific rotation(20/D)
(C=4 in 6N HCL)
-14.0 to -16.0°Degree
State of solution
(Transmittance)
Clear and colorless
Not less than 98.0%
Chloride (Cl)
Not more than 0.020%
Heavy metals(Pb)
Not more than 10ppm
Arsenic(As2O3)
Not more than 1ppm
Other amino acids
Chromatographically
Not detectable
Loss on drying
Not more than 0.20%
Residue on ignition(sulfated)
Not more than 0.10%
Assay
99 to100.5%