Item
Standard
Appearance
White crystals or crystalline powder
Specific rotation[α]20/D
(C=8 in 6N HCl)
+25.5 to +27.5 Degree
State of Solution (Transmittance)
Not less than 98.0%
Chloride (Cl)
Not more than 0.050%
Ammonium (NH4)
Not more than 0.02%
Sulfate (SO4)
Not more than 0.030%
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 3.0%
Residue on ignition(sulfated)
Not more than 0.20%
Assay
98.5% to 101.5%
pH
5.5 to 7.0
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