Cas 52-90-4 L-Cysteine
$188.00 - $5,400.00
MF: C3H7NO2S
MW: 121.16
EINECS : 200-158-2
Product introduction：
L-cysteine is mainly used in the fields of cosmetics, medicine and food.
Product introduction：
L-cysteine is mainly used in the fields of cosmetics, medicine and food.
In cosmetics, it is used to prepare hair perm essence, sunscreen, hair perfume and hair nourishing essence.
In the field of medicine, it is used to prepare methylcysteine, ethyl cysteine, acetyl cysteine, methyl cysteine, ethyl cysteine and synthetic amino acid preparations and other drugs.
Cysteine can be used as a protective drug against radiation injury.
In food, L-cysteine is used as a fermentation aid (ripening agent) for bread, an antioxidant stabilizer for milk powder and fruit juice, and a nutritional agent for pet and animal food.
It is widely use in many fields like the following:
1. Bread improver;
Nutritional supplements;
Antioxidant;
Stabilizer.color-protecting.
It has detoxification effect on acrylonitrile and aromatic acidosis.
It has the function of preventing radiation damage;
It has the effect of treating bronchitis and reducing phlegm.
It absorbs alcohol and converts it into acetaldehyde in the body.
2. For the treatment of eczema, urticaria, freckles and other skin diseases, its series of products are widely used in the pharmaceutical, food and cosmetic industries.
3. Used for biochemical research, used as antidote for hepatitis, liver poisoning, radioactive drug poisoning, antimony poisoning and so on.
4. It is mainly used in medicine, cosmetics, biochemical research, etc.
Used in bread to promote gluten formation and fermentation, mold, prevent aging, etc.
Used in natural fruit juices to prevent vitamin C oxidation and prevent fruit juices from Browning.
This product has detoxification effect, can be used for acrylonitrile poisoning, aromatic acidosis.
The product also has the effect of preventing radiation damage to the human body, but also the treatment of bronchitis drugs, especially as a phlegm (mostly in the form of acetyl L- cysteine methyl ester salt use.
Cosmetics are mainly used in beauty lotion, hair perm fluid, anti-sun cream and so on.
5. Widely used in medicine, food, cosmetics and other industries.
Chemical Properties：
Melting point | 220 °C (dec.)(lit.) |
alpha | 8.75 º (c=12, 2N HCl) |
Boiling point | 293.9±35.0 °C(Predicted) |
density | 1.197 (estimate) |
FEMA | 3263 |
refractive index | 8.8 ° (C=8, 1mol/L HCl) |
storage temp. | Store at RT. |
solubility | H2O: 25 mg/mL |
pka | 1.92(at 25℃) |
form | Solid |
color | White |
PH | 4.5-5.5 (100g/l, H2O, 20℃) |
optical activity | Optical rotation: +8° to +9° (c = 5, 1 N HCl, 20°C). |
Water Solubility | 280 g/L (25 ºC) |
Sensitive | Air Sensitive |
λmax | λ: 260 nm Amax: 1.5 |
JECFA Number | 1419 |
Merck | 14,2781 |
BRN | 1721408 |
Stability: | Stability Stable, but may be air sensitive. Incompatible with oxidizing agents, bases. |
Packing & Shipping:
Sample :
10g/bag; 50g/bag; 100g/bag; 500g/bag; 1kg/bag.
Large cargo：
1kg/bag; 25kg/bag; 25kg/drum;
50kg/drum; 75kg/drum; 100kg/drum; 200kg/drum.
