DL-Cysteine Powder Cas Number 3374-22-9
| Name |
DL-Cysteine |
| Molecular Formula |
C3H7NO2S |
| Molecular Weight |
121.16 |
| CAS Registry Number |
3374-22-9 |
| EINECS |
222-160-2 |
| Melting point |
225 ºC |
| Water solubility |
SOLUBLE |
What is DL-CYSTINE?
DL-CYSTINE is a covalently linked dimeric nonessential amino acid formed by the oxidation of CYSTEINE. Two molecules of cysteine are joined together by a disulfide bridge to form cystine.
Item Specification
Appearance White crystals or crystalline powder
Specific Rotation[α ]D20 -1° To +1°
State of solution Clear and colorless
Not less than 95.0%
Chloride (Cl) Not more than 0.10%
Iron (Fe) Not more than 5ppm
Heavy Metals (Pb) Not more than 10ppm
Aresenic (As2O3) Not more than 1ppm
Other amino aicds Chromatographically not detectable
Loss on drying Not more than 0.2%
Residue on ignition Not more than 0.1%
Assay 98.0% to 102.0%
| DL-Cysteine Basic information |
| Product Name: |
DL-Cysteine |
| Synonyms: |
(RS)-2-Amino-3-mercapto-propansαure;Cysteine, DL-;DL-2-amino-3-mercaptopropanoicacid;DL-2-amino-3-mercaptopropionicacid;Carbocistein Impurity 2;DL-CYSTEINE FREE BASE;DL-2-Amino-3-mercaptopropionicacid~H-DL-Cys-OH;(+/-)-2-AMINO-3-MERCAPTOPROPIONIC ACID |
| CAS: |
3374-22-9 |
| MF: |
C3H7NO2S |
| MW: |
121.16 |
| EINECS: |
222-160-2 |
| Product Categories: |
Amino Acids;Pharmaceutical Intermediates |
| Mol File: |
3374-22-9.mol |
| |
| |
| DL-Cysteine Chemical Properties |
| Melting point |
225 °C (dec.)(lit.) |
| Boiling point |
293.9±35.0 °C(Predicted) |
| density |
1.197 (estimate) |
| refractive index |
1.5130 (estimate) |
| form |
Powder |
| pka |
2.07±0.10(Predicted) |
| color |
White to off-white |
| Water Solubility |
Soluble in water (partly), 1 N HCl (25 mg/ml), ethanol, and acetic acid. Insoluble in acetone. |
| BRN |
1721406 |
| Stability: |
Stable. Incompatible with strong oxidizing agents, |
| CAS DataBase Reference |
3374-22-9(CAS DataBase Reference) |
| NIST Chemistry Reference |
DL-Cysteine(3374-22-9) |
| Hazard Codes |
Xn,Xi,C |
| Risk Statements |
20/21/22-36/37/38-22-35 |
| Safety Statements |
26-36-37/39-45-36/37/39 |
| RIDADR |
UN 2923 6.1(8) / PGIII |
| WGK Germany |
3 |
| RTECS |
HA1595000 |
| F |
8-10-23 |
| HS Code |
29309013 |
| DL-Cysteine Usage And Synthesis |
| Chemical Properties |
white solid |
| Uses |
DL-Cysteine is a non-essential amino acid that can be synthesized by the human body under normal physiological conditions if a sufficient quantity of methionine is available. Cysteine is commonly used as a precursor in the food and pharmaceutical industries. Cysteine is used as a processing aid for baking, as an additive in cigarettes, as well as in the preparation of meat flavours. |
| Definition |
ChEBI: A sulfur-containing amino acid that is propanoic acid with an amino group at position 2 and a sulfanyl group at position 3. |
| |
| DL-Cysteine Preparation Products And Raw materials |
| Raw materials |
DL-Cysteine hydrochloride |
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.
Packing&Shipping
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.
Q9.Why do you choose us?
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.
Audited Supplier 
){kind=link}
){kind=link}