Appearance White crystals or crystalline powder
Assay 98.5~101.0%
pH 10.5~12.0
Specific rotation[α]D20 +26.9°~ +27.9°
Transmittance T430 98.0%min
Chloride (Cl) 0.020% max
Ammonium (NH4) 0.02% max
Sulfate (SO4) 0.020% max
Iron (Fe) 10ppm max
Heay metals(Pb) 10ppm max
Arsenic (As) 1ppm max
Other amino acids 0.5% max
Loss on drying 0.50% max
Residue on ignition 0.10% max
Pyrogen C=5
