SPEC SHEET
| ITEMS |
SPECIFICATIONS |
| Assay |
≥98% |
| Appearance |
White crystals or crystalline powder |
| Specific rotation [α]D 20 |
+8.3°~ +9.5° |
| State of solution |
≥95% |
| Loss on drying |
≤0.5% |
| Residue on ignition |
≤0.1% |
| Chloride(Cl) |
≤0.02% |
| Ammonium(NH4) |
≤0.02% |
| Sulfate(SO4) |
≤0.03% |
| Iron(Fe) |
≤10ppm |
| Other amino acids |
Undetectable |
| PH |
4.5~5.5 |
| Heavy metals |
≤10ppm |
Application:
1. L-Cysteine has an effective detoxification.
2. L-Cysteine can effectively prevent and treat radiation injury.
3. L-Cysteine can remove the skin melanin itself, change the nature of the skin itself.
4. L-Cysteine can improve the symptoms of inflammation and skin allergies.
5. L-Cysteine on horny skin disease is also effective hypertrophy.
6. L-Cysteine has a function to prevent biological aging.
7.Cysteine is a kind of natural amino acid, has many uses in food processing, it is mainly used for baking products, as a necessary component of dough improver
8.Cysteine is a kind of reductant, it can promote the formation of gluten, reduce the time needed for mixing and the energy required for medicinal.
| L-Cysteine Basic information |
| description Chemical properties Amino acids health benefits Uses Cysteine Metabolism Production methods synthesis physiological effects |
| Product Name: |
L-Cysteine |
| Synonyms: |
(R)-2-Amino-3-mercaptopropanoic acid;3-mercapto-l-alanin;alpha-amino-beta-mercaptopropionicacid;alpha-Amino-beta-thiolpropionic acid;alpha-amino-beta-thiolpropionicacid;Cystein;half-cysteine;L-Cysteine - animal origin |
| CAS: |
52-90-4 |
| MF: |
C3H7NO2S |
| MW: |
121.16 |
| EINECS: |
200-158-2 |
| Product Categories: |
Amino Acids;API intermediates;Cysteine [Cys, C];Amino Acids;Amino Acids and Derivatives;alpha-Amino Acids;Antioxidant;Biochemistry;Nutritional Supplements;L-Amino Acids;amino |
| Mol File: |
52-90-4.mol |
| |
| |
| L-Cysteine Chemical Properties |
| Melting point |
240 °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 | L-CYSTEINE |
| refractive index |
8.8 ° (C=8, 1mol/L HCl) |
| storage temp. |
Store below +30°C. |
| solubility |
H2O: 25 mg/mL |
| pka |
1.92(at 25ºC) |
| form |
Solid |
| color |
White |
| PH |
4.5-5.5 (100g/l, H2O, 20ºC) |
| optical activity |
Optical rotation: +8° to +9° (c = 5, 1 N HCl, 20°C). |
| Water Solubility |
280 g/L (25 ºC) |
| λmax |
λ: 260 nm Amax: 1.5
λ: 280 nm Amax: 0.2 |
| Sensitive |
Air Sensitive |
| Merck |
14,2781 |
| JECFA Number |
1419 |
| BRN |
1721408 |
| Stability: |
Stability Stable, but may be air sensitive. Incompatible with oxidizing agents, bases. |
| CAS DataBase Reference |
52-90-4(CAS DataBase Reference) |
| NIST Chemistry Reference |
L-Cysteine(52-90-4) |
| EPA Substance Registry System |
L-Cysteine (52-90-4) |
Hunan JK International Trade Corporation / JK BIO-CHEM CO.,LTD is a professional exporter of food/feed additives and food /feed ingredients in China. With years of development, now we are able to provide the following food additives and food ingredients: thickeners, antioxidants, preservatives, vitamins, sweeteners, proteins, acidulants, nutritional supplements, flavours, coenzyme and so on.
Our food additives and food ingredients, especially our Ascorbic Acid (Vitamin C), Acesulfame-K, Aspartame, Citrates, Dextrose, D-Xylose, Erythorbic Acid, Fumaric Acid, Fructose,Maltodextrin, Malic Acid, Monosodium glutamate, Lactic Acid Potassium Sorbate, Sodium Erythorbate, Sodium Cyclamate, Sodium Saccharin, sodium benzoate, Sodium ascorbate, Sorbic Acid, xanthan Gum, Xylitol, Tartaric Acid, I+G, , Vanillin, Sucralose, Stevia and so on, have been exported to more than 60 countries for our good quality products.
Our staff of sales and technical support is available to help you in selecting the right protection for your application as well as to provide you with samples of our products for evaluation. At High Five, we are committed to providing the highest level of customer service, competitive pricing, speedy delivery and a comprehensive, cutting-edge product offering. Our ultimate goal is your satisfaction.
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FAQ
Q1.What's the payment terms?
We could accept T/T, L/C, DP payment terms.
Q2.How about the different index of products in same application?
Specifications can be customized according to your application.
Q3.How about the samples of products?
We can provide free samples under 2Kg(not including freight charge).
Q4.How about the price of products?
Our products are chemical synthesis got from underground brine, which is available for a variety of usage. Our products are high purity with good quality, and the price is based on different specification and quantity.
Q5.What's the shelf life for the cargoes?
Our product's shelf life is 2 years, which is based on dry and ventilated storage.
Q6.What's the package of the cargoes?
20kg/25kg woven bags, within plastic bags, or as customized.
Q7.What's the delivery time?
We usually deliver the cargoes within 10~20 days after receiving customer's payment or original L/C.
Q8.Which documents can we supply?
Commercial Invoice, Packing List, Certificate of Analysis, Certificate of Origin (FORM E), Bill of Loading, ISO etc.
The documents will be sent by Express within 24 hours against your full payment.
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We accept safe and diversified payment terms.
We supply a price trend to ensure clients know marketing information in time. We will take charge of 100% responsibility for
quality issue. We strive to create value for each customer we serve by meeting their unique needs and providing solutions to solve their problems and achieve their objectives.
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