China L-Cystine CAS 56-89-3 White Crystal Powder, Find details about China Pharmaceutical, Pharmaceutical Chemical from L-Cystine CAS 56-89-3 White Crystal Powder
Analytical Items | Standard |
Appearance | White crystal powder |
Assay | 98.5%~101.0% |
pH | 5.0~6.5 |
Specific rotation | -215°~225° |
Transmittance | ≥98.0% |
Loss on drying | ≤0.2% |
Residue on ignition | ≤0.1% |
Chloride (as Cl) | ≤0.02% |
Sulphate (as SO4) | ≤0.02% |
Iron (as Fe) | ≤0.001% |
Ammonium (as NH4) | ≤0.02% |
Heavy Metals (as Pb) | ≤0.001% |
Arsenic | ≤0.0001% |