Item

Standard

Analysis data

Appearance

White crystals or crystalline powder

Conforms

Specific rotation[α]20/D
(C=8 in 6N HCl)

+25.5to +27.5 Degree

25.8 Degree

State of Solution (Transmittance)

Not less than 98.0%

98.2%

Chloride (Cl)

Not more than 0.050%

<0.05%

Ammonium (NH4)

Not more than 0.02%

<0.02%

Sulfate (SO4)

Not more than 0.030%

<0.03%

Iron (Fe)

Not more than 30ppm

<30ppm

Heavy metal(Pb)

Not more than 10ppm

<10ppm

Arsenic(As2O3)

Not more than 1ppm

<1ppm

Other Amino Acids

Chromatographically
Not detectable

Conforms

Loss on drying

Not more than 3.0%

2.1%

Residue on ignition(sulfated)

Not more than 0.20%

0.16%

Assay

98.5% to 101.5%

99.7%

pH

5.5 to 7.0

6.1