Item

Standard

Analysis data

Appearance

White fine crystals or White power

conforms

Specific rotation(20/D)

(C=4 in6N HCL)

-14.0 to -16.0°Degree

-14.67°

Chloride (Cl)

Not more than 0.020%

0.018%

Heavy metals(Pb)

Not more than 10ppm

8ppm

Arsenic(As2O3)

Not more than 1ppm

＜1ppm

Other amino acids

Chromatographically

Not detectable

conforms

Loss on drying

Not more than 0.20%

0.15%

Residue on ignition(sulfated)

Not more than 0.10%

0.09%

Assay

98.0 to100.5%

99.0%