ITEMS

SPECIFICATION

RESULTS

Specific rotation [a]_D^20-

+8.3°～+9.5°

+9.15°

State of solution

≥95.0%

98.6%

Chloride （Cl）

≤0.02%

0.012%

Ammonium（NH₄）

≤0.02%

0.010%

Sulphate(SO₄)

≤0.03%

0.015%

Iron(Fe)

≤10ppm

3ppm

Arsenic(As₂O₃)

≤1ppm

0.1ppm

Heavy Metals (Pb)

≤10ppm

3ppm

Loss on drying

≤0.5%

0.28%

Residue on ignition

≤0.10%

0.07%

Other amino acids

Conforms

Qualified

Assay

98.5% ~ 101.0%

99.8%

pH

4.5 ~5.5

4.9

Conclusion: The product complies with AJI92 standard