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CAS 52-90-4
Tipe
Sintesis Material peralihan
Deskripsi Produk
Product Description
| Common Name | L-Cysteine |
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CAS Number | 52-90-4 | Molecular Weight | 121.15800 |
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Density | 1.334 g/cm3 | Boiling Point | 293.9ºC at 760 mmHg |
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Molecular Formula | C3H7NO2S | Melting Point | 220ºC |
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Refractive Index | 8.8 ° (C=8, 1mol/L HCl) | Flash Point | 131.5ºC |
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Product Parameters
Food Grade:
Item | Specifications (AJI97 ) |
Appearance | White crystal or crystalline powder; tasteless |
Assay, % | 98.5~101.0 |
Specific rotation | -218°~ -224° |
Loss on drying, % | ≤0.2 |
Transmittance, % | ≥98.0 |
Chloride (as Cl), % | ≤0.02 |
Sulfate (as SO4), % | ≤0.02 |
Ammonium as (as NH4), % | ≤0.02 |
Iron (as Fe), % | ≤0.001 |
Heavy Metals (as Pb), % | ≤0.001 |
pH Value | 5.0~6.5 |
Residue on ignition, % | ≤0.1 |
Other amino acid | Conforms |
Item | Specifications (AJI97 ) |
Pharm Grade:Item | Specifications (AJI97 ) |
Appearance | White crystal or crystalline powder; tasteless |
Assay, % | 98.5~101.0 |
Specific rotation | -218°~ -224° |
Loss on drying, % | ≤0.2 |
Transmittance, % | ≥98.0 |
Chloride (as Cl), % | ≤0.02 |
Sulfate (as SO4), % | ≤0.02 |
Ammonium as (as NH4), % | ≤0.02 |
Iron (as Fe), % | ≤0.001 |
Heavy Metals (as Pb), % | ≤0.001 |
pH Value | 5.0~6.5 |
Residue on ignition, % | ≤0.1 |
Other amino acid | Conforms |
Item | Specifications (AJI97 ) |
Appearance | White crystal or crystalline powder; tasteless |
Assay, % | 98.5~101.0 |
Specific rotation | -218°~ -224° |
L-Cysteine Hcl Monohydrate,Colorless to white crystalls or crystal powder, slightly special smell sour, melting point 175 ºC (decomposition).Soluble in water, the aqueous solution is acidic, the pH value of 1% solution is about 1.7, and the pH value of 0.1% solution is about 2.4.Also soluble in alcohol, and acetic acid, not soluble in ether,, benzene, etc.It has the function of reducing, anti-oxidation and preventing non-enzymatic Browning.
L-Cysteine Hcl Monohydrate is soluble in water and can be quickly absorbed by the human body by injection or tablet.It is the main raw material for production of carboxymethyl cysteine and acetylcysteine.L-Cysteine is widely used in fields of medicine, food processing, biological study, materials of chemical industry and so on.
Used in the cure of liver disease, antioxidant and antidote.
Used in cosmetic.
1. L-Cysteine hydrochloride monohydrate has an effective detoxification.
2. L-Cysteine hydrochloride monohydrate can effectively prevent and treat radiation injury.
3.L-Cysteine hydrochloride monohydrate can remove the skin melanin itself, change the nature of the skin itself, the skin becomes natural whitening. It is a kind of ideal natural whitening cosmetics.
4. L-Cysteine hydrochloride monohydratecan improve the symptoms of inflammation and skin allergies.
5.L-Cysteine hydrochloride monohydrate on horny skin disease is also effective hypertrophy.
6. L-Cysteine hydrochloride monohydrate has a function to prevent biological aging,
1. N-acetyl-cysteine is the acetylated form of L-cysteine which is more efficiently absorbed and used. It is also an antioxidant that is helpful against viruses.
2. N-acetyl-cysteine has been used as a liver protectant and to break up pulmonary and bronchial mucus.
3. N-acetyl-cysteine can boost glutathione levels in cells.
Widely used in fields of medicine, food processing, biological study, materials of chemical industry and so on. It is a promotor for bread fermentation.It promotes the form of glutelin and prevents from getting ageing.
Also used in cosmetic. It is used in natural fruit juice for preventing Vitamin C oxide. It has a detoxification for poison of
aromafic acid. It is used for protecting against radiation harm and therapy of bronchitis and liquefy sputum.
4. N-Acetyl-L-Cysteine is a conditionally essential amino acid, one of only three sulfur-containing amino acids, the others being taurine (which can be produced from L-cysteine) and L-methionine from which L-cysteine can be produced in the body by a multi-step process.
5. N-Acetyl-L-Cysteine can act as an antioxidant, may prevent liver diseases, and can help to thicken the individual diameters of existing hair if taken regularly. Company Profile
Hebei Qiudu Technology CO., LTD specializes in exporting high quality Research chemical,Basic chemical and plastic raw material etc. Our products are produced on the basis of best technical team, advanced equipment, high qualified management which meet the requirements of security and environmental protection. We earned customer trust and created a good reputation during these years. We will provide the most comprehensive products and service to you ! We are looking forward to your cooperation! specializes in exporting high quality Research chemical,Basic chemical and plastic raw material etc.
Our Service1) The professional sales reprensentative answers your inquiy on time;
2) We can provide reasonable price, high quality product and prompt shipmen;
3) We can send the goods to your delivery addreee directly, it is relatively safe and fast;
4) Warm sfter sale service, we will help to solve the problems in your usage.
Packaging & Shipping
1.Packing:
25kg/bag, or per your requirement.
18-20mt/20'FCL
2.Storage:
The resin should be stored in a drafty, dry warehouse and away from fire and direct sunlight. It should not be piled up in the open air.
3.Transportation:
During transportation, the product should not be exposed to strong sunlight or rain and should not be transported together with sand, soil, scrap metal, coal or glass. Transportation together with toxic, corrosive and flammable substance is strictly prohibited.
FAQ
1.How to place my order?
No matter sample order or bulk order, Dongdu will draft an online contract with you via Alibaba Trade Assurance (free order protection service). Please contact us to place your order.
2.Where do you ship to?
Semi-Automatic PET Bottle Blowing Machine Bottle Making Machine Bottle Moulding Machine PET Bot Making Machine is suitable for produccontainers and bottles in all shapes.
3.Is there any discount?
Yes, for larger quantities, we can offer you a better price.
4. How can we guarantee quality?
Always a pre-production sample before mass production; Always final Inspection before shipment.
5. What services can we provide?
- Accepted Delivery Terms: FOB,CFR,CIF,EXW,FCA;
Accepted Payment Currency:USD,GBP,CNY;
Accepted Payment Type: T/T,L/C,D/P D/A;
Language Spoken:English,Chinese.
Alamat:
Room 1702, Block E, Haiyue Tiandi, 66 Yuhua West Road, Qiaoxi District, Shijiazhuang, Hebei, China
Jenis Usaha:
Produsen/Pabrik, Perusahaan Perdagangan
Jangkauan Bisnis:
Kesehatan & Obat-obatan, Kimia, Mesin Manufaktur & Pemrosesan, Metalurgi, Mineral & Energi
Sertifikasi Sistem Manajemen:
ISO 9001, ISO 9000
Pengenalan Perusahaan:
Perusahaan kami menawarkan berbagai produk yang dapat memenuhi berbagai kebutuhan Anda. Kita mematuhi prinsip manajemen "mutu pertama, berbasis pelanggan dan kredit", sejak perusahaan itu berdiri dan selalu melakukan yang terbaik untuk memenuhi kebutuhan pelanggan. Perusahaan kita dengan tulus berkeinginan untuk bekerja sama dengan perusahaan-perusahaan dari seluruh dunia untuk mewujudkan situasi yang menang-menang sejak tren globalisasi ekonomi telah berkembang dengan kekuatan yang tidak dapat menggiurkan.