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By certification 
Appearance
White crystals or crystalline powder
State of solution
(Transmittance)
Not less than 95.0%
Chloride (Cl)
Not more than0.01%
Heavy metal(Pb)
Not more than 10ppm
Arsenic(As2O3)
Not more than 2ppm
Other amino acids
Chromatographically
not detectable
Loss on drying
Not more than 0.50%
Residue on ignition(sulfated)
Not more than 0.20%
Assay
98.0 to101.0%
White crystals or crystalline powder
State of solution
(Transmittance)
Not less than 95.0%
Chloride (Cl)
Not more than0.01%
Heavy metal(Pb)
Not more than 10ppm
Arsenic(As2O3)
Not more than 2ppm
Other amino acids
Chromatographically
not detectable
Loss on drying
Not more than 0.50%
Residue on ignition(sulfated)
Not more than 0.20%
Assay
98.0 to101.0%
