Items

Specification

Appearance:

White crystalline  powder

Specific rotation

+25.5 to +26.5

Color and clarity of solution:

Clear and colorless

Transmittance:

Not less than 98%

Chloride (Cl):

Not more than 0.02%

Iron (Fe):

Not more than 10ppm

Sulfate (SO₄):

Not more than 0.02%

Ammonium(NH₄⁺):

Not more than 0.02%

Asenic (As₂O₃):

Not more than 1ppm

Heavy metals(Pb):

Not more than 10ppm

pH value:

5.0-7.0

Loss on drying:

Not more than 0.3%

Residue on ignition:

Not more than 0.1%

Other amino acids

Chromatographically not detectable

Assay:

98.5-101.1%