【CAS No.】：7048-4-6
【Structural Formula】 ：C3H7NO2S.HCL.H2O
【Structural Formula】 ：C3H7NO2S.HCL.H2O
【Molecular weight】：175.64
【Description】:White crystals or crystalline powder, Having a strong acid taste, could be dissolved in water.
【Packing】:25KG/ Paper drum
CERTIFICATE OF ANALYSIS
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Product: L- Cysteine HCL MONO CAS No:(7048-4-6) | ||
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Item |
Specification(AJI92) |
Result |
|
Specific rotation[a]D20 |
+5.5° to +7.0° |
+6.12° |
|
State of solution
( Transmittance) |
Clear and colorless
Not less than 98.0% |
99.0% |
|
Chloride(Cl) |
19.89 to 20.29% |
20.13% |
|
Ammonium(NH4) |
≤0.02% |
≤ 0.019% |
|
Sulfate (SO4) |
≤ 0.020% |
≤ 0.019% |
|
Iron(Fe) |
≤ 10ppm |
≤ 2ppm |
|
Heavy metals(Pb) |
≤ 10ppm |
≤ 3ppm |
|
Arsenic(as As2o3) |
≤ 1ppm |
≤ 1ppm |
|
other amino acids |
Chromatographically
Not detectable |
Conforms |
|
Loss on drying |
8.50 to 12.00% |
10.18% |
|
Residue on ignition(sulfated) |
≤ 0.1% |
0.05% |
|
Assay |
98% to 101.5% |
99.9% |
|
PH |
1.5 to 2.0 |
1.6 |