- Min.Order :1 Kilogram
- Purity: 99%
- Payment Terms : L/C,T/T
Keywords
L-Cysteine Cysteine, L- CAS:52-90-4
Quick Details
- Appearance:White powder
- Application:Cosmetic Raw Materials
- PackAge:25kg/drum
- ProductionCapacity:2000|Metric Ton|Year
- Storage:Store in cool and dry place, away from sun light.
- Transportation:By sea or by air
Superiority:
Product Name: L-Cysteine
CAS Number: 52-90-4
Molecular Formula: C3H7NO2S
Molecular Weight: 121.16
EINECS Number: 200-158-2
Appearance：White powder
Purity：99%
Details:
|
Items |
Specification |
|
Appearance |
white powdery |
|
Identification |
tested by Infrared absorption spectrometer |
|
Specific rotation |
+8.3°- +9.5° |
|
Solubility |
≥ 95.0% |
|
Chlorine content |
≤ 0.04% |
|
Ammonium salt (NH4 ) |
≤ 0.02% |
|
Sulfate radical (SO4 ) |
≤ 0.030% |
|
Ferric salt (Fe) |
≤ 10PPm |
|
Heavy metal (Pb) |
≤ 10PPm |
|
Arsenic salt (As2O3) |
≤ 1PPm |
|
Other amino acids |
conforms |
|
Loss on drying |
≤ 0.5% |
|
Residue on Ignition (sulfated) |
≤ 0.1% |
|
Assay |
98.0-101.0% |
|
pH |
4.5-5.5 |
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