Item |
Specifications (USP) |
Specifications (AJI) |
Description |
White crystals or crystalline powder |
White crystals or crystalline powder |
Identification |
Infrared absorption spectrum |
Infrared absorption spectrum |
Specific rotation
[a]D20° |
+26.3 °- +27.7° |
+26.9 °- +27.9° |
State of solution
/Transmittance |
--- |
≥ 98.0% |
Chloride (Cl) |
≤ 0.05% |
≤ 0.020% |
Ammonium (NH4) |
--- |
≤ 0.02% |
Sulfate (SO4) |
≤ 0.03% |
≤ 0.020% |
Iron (Fe) |
≤ 0.003% |
≤ 10PPm |
Heavy metals (Pb) |
≤ 0.0015% |
≤ 10PPm |
Arsenic (As2O3) |
--- |
≤ 1PPm |
Other amino acids |
--- |
Chromatographically not detectable |
Loss on drying |
≤ 0.5% |
≤ 0.5% |
Residue on ignition
(sulfated) |
≤ 0.3% |
≤ 0.10% |
Assay |
98.5-101.5% |
99.0 - 101.0% |
PH |
--- |
10.5-12.0 |
Organic volatile impurities |
Meets the requirements |
--- |