Item | Standard | Analysis data |
State of solution (Transmittance) | Clear and colorless Not less than 95.0% | Conforms 98.2% |
Chloride (Cl) | Not more than 0.020% | 0.01% |
Ammonium (NH4) | Not more than 0.02% | <0.02% |
Sulfate (SO4) | Not more than 0.020% | 0.005% |
Iron (Fe) | Not more than 30ppm | 8ppm |
Heavy metal(Pb) | Not more than 10ppm | 9ppm |
Arsenic(As2O3) | Not more than 1ppm | <1ppm |
Other amino acids | Chromatographically Not detectable | Conforms |
Loss on drying | Not more than 0.20% | 0.13% |
Residue on ignition(sulfated) | Not more than 0.15% | 0.11% |
Assay | 98.5 to100.5% | 99.0% |