(Transmittance) Not less than 95.0%
Chloride (Cl):Not more than 0.020%
Ammonium (NH4):Not more than 0.02%
Sulfate (SO4):Not more than 0.020%
Iron (Fe):Not more than 30ppm
Heavy metal(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 0.15%
Assay:98.5 to100.5%