4371-52-2
52-90-4;4371-52-2
C3h7no2s
200-158-2
Plastic
Normal
24 Months
Amino Acid
Natural
98.5%
Aji92
Carton, Drum
25Kg
China
2930909099
Product Description
Product Name L-Cysteine
Alias L-Mercapto Alanine
Molecular Formula C3H7NO2S
Molecular Weight 121.15
CAS No. 52-90-4;4371-52-2
Shelf Life 2 years
Quality Standard AJI92
Specification:
Application:
1) Mainly used in medicine, cosmetics, biochemical research and other aspects.
2) Used in bread, to promote the formation of gluten and promote fermentation, mold, prevent aging.
3) Used in natural juices to prevent vitamin C from oxidizing and to prevent the juices from turning brown.
4) The product has a detoxification effect, can be used for acrylonitrile poisoning, aromatic acidosis.
5) It is also used to prevent radiation damage to the body and is a drug for the treatment of bronchitis, especially as a expectorant (mostly in the form of acetyl l-cysteine methyl ester).
6) Cosmetics mainly used for beauty water, perm fluid, sun - proof skin care cream.
Packing:
25kg/drum
Storage:
Store in tightly closed original container, protected from light, in a dry place.




Alias L-Mercapto Alanine
Molecular Formula C3H7NO2S
Molecular Weight 121.15
CAS No. 52-90-4;4371-52-2
Shelf Life 2 years
Quality Standard AJI92
Specification:
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% |
Application:
1) Mainly used in medicine, cosmetics, biochemical research and other aspects.
2) Used in bread, to promote the formation of gluten and promote fermentation, mold, prevent aging.
3) Used in natural juices to prevent vitamin C from oxidizing and to prevent the juices from turning brown.
4) The product has a detoxification effect, can be used for acrylonitrile poisoning, aromatic acidosis.
5) It is also used to prevent radiation damage to the body and is a drug for the treatment of bronchitis, especially as a expectorant (mostly in the form of acetyl l-cysteine methyl ester).
6) Cosmetics mainly used for beauty water, perm fluid, sun - proof skin care cream.
Packing:
25kg/drum
Storage:
Store in tightly closed original container, protected from light, in a dry place.




