Item

Standard

Analysis data

Appearance

White crystalline powder

Conforms

Specific rotation[α]20/D
(C=8 6N HCl)

+28.0 to ~30.0Degree

29.0°

Transmittance

Not less than 98.0%

98.2%

Chloride (Cl)

Not more than 0.020%

<0.02%

Ammonium (NH4)

Not more than 0.02%

<0.02%

Sulfate (SO4)

Not more than 0.030%

<0.02%

Iron (Fe)

Not more than 10ppm

<10ppm

Heavy metal(Pb)

Not more than 10ppm

<10ppm

Arsenic(As2O3)

Not more than 1ppm

<1ppm

Other Amino Acids

Chromatographically
Not detectable

Conforms

Water

Not more than 5.0%

<3.0%

Residue on ignition(sulfated)

Not more than 0.20%

0.15%

Assay

98.5%~101.0%

99.0%

PH

6.0 to 7.5

6.8