China L-Cysteine HCl, Find details about China Amino Acid, Nutritional Supplement from L-Cysteine HCl
Analytical Items | Standard |
Appearance | White crystals or crystalline powder |
Assay | 98.0~101.0% |
pH value | 4.5~5.5 |
Specific optical rotation[a]D20° | +8.3o~ +9.5o |
State of solution (Transmittance) | ≥95.0% |
Loss on drying | ≤0.5% |
Residue on ignition | ≤0.1% |
Chloride (Cl) | ≤0.04% |
Sulfate (SO4) | ≤0.03% |
Ammonium (NH4) | ≤0.02% |
Iron (Fe) | ≤0.001% |
Heavy metals (Pb) | ≤0.001% |
Arsenic | ≤0.0001% |