CAS No.: | 52-90-4 |
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Formula: | C3h7no2s |
EINECS: | 200-158-2 |
Packaging Material: | Plastic |
Storage Method: | Normal |
Shelf Life: | 24 Months |
Samples: |
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Product Info
Testing Item
|
Standard
|
Result
|
Appearance
|
White crystals or crystalline powder
|
conforms
|
Specific rotation 20
|
+ 8.3°~ +9.5°
|
+8.72°
|
State of solution (Transmittance)
|
≥95.0%
|
98.5%
|
Loss on drying
|
≤0.50%
|
0.18%
|
Residue on ignition
|
≤0.10%
|
0.07%
|
Heavy metals(Pb)
|
≤10PPM
|
<10PPM
|
Chloride (Cl)
|
600---1000ppm
|
800ppm
|
Arseni c (As2O3)
|
≤1PPM
|
conforms
|
Iron (Fe)
|
≤10PPM
|
<10PPM
|
Ammonium (NH4)
|
≤0.02%
|
<0.02%
|
Sulfate (SO42-)
|
≤0.030%
|
≤0.030%
|
Other amino acids
|
Chromatographically
|
Qualified
|
PH value
|
4.5 ~ 5.5
|
5.0
|
Assay
|
98.0%~101.0%
|
99.4%
|
Description
L-cysteine, also known as cysteine, is a human non-essential amino acid, amino acid is the constituent unit of protein, protein is the material basis of life, as large as humans to microorganisms, none is not composed of protein. Chemicalbook proteins are composed of peptides, whose peptide chains are composed of amino acids. Different proteins are made up of peptide chains of different order and length of amino acids. The genes involved in heredity are actually chains of amino acids in different sequences.
Use
Bread improvers; Nutritional supplements; Antioxidants; Color protectant.
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