Hebei Nengqian Chemical Import and Export Co., LTD
Assessed Supplier Enterprise Certification
- Assessed
Supplier - 4th
years
Assessed Supplier Enterprise Certification
Product Certification&
Enterprise Certification
Country: 
China (Mainland)
Business Type:Trading Company
Tel: 86-139-10575315
Tel: +86 15632961819
Tel: +86 18233902561
Tel: +86 15717685612
Tel: +86 16630923639
Tel: +86 18732968538
Tel: +86 18833033983
Tel: +86 19831957301
Mobile: +86 19831957301
Tel: 86-139-10575315
Fax: 4001020630
URL: https://www.nengqianchemical.com/
Province/state: Hebei
City: Handan
Street: Congtai District, La Defense North
MaxCard:
Ms.AnnaCAS NO.83-46-5
Industrial Grade(1-10)Metric TonIndustrial Grade(10-101)Metric TonIndustrial Grade(100-300)Metric Ton
With our good experience, we offer detailed technical support and advice to assist customers. We communicate closely with customers to establish their quality requirements.
Consistent Quality
Our plant has strict quality control in each manufacturing process. Guaranteed.
Meanwhile all the materials are tested before each shipment in our laboratory to double confirm the quality.
Most competitive pricing
Our company is committed to the production and development of titanium dioxide, we always offer the most competitive pricing to customers to help lower their cost in application.
Shortest delivery time
90% of orders are shipped within 7-10 days after receipt of the prepayment or workable L/C.
Respond in 24 hours to inquiry, feedback or other requirements
Our experienced staff is dedicated to answer all of your inquires, feedback or other requirements in 24 hours.
We welcome you to contact us for more information and look forward to working with yo
Product introduction:
| Density | 0.9540 (rough estimate) |
| Melting Point | 136-140°C(lit.) |
| Boling Point | 473.52°C (rough estimate) |
| Specific Rotation(α) | -28 º (c=2, CHCl3) |
| Flash Point | 220.4°C |
| Water Solubility | INSOLUBLE |
| Solubility | Insoluble in water, soluble in chloroform, benzene, ethanol, carbon disulfide and ether. |
| Vapor Presure | 3.53E-12mmHg at 25°C |
| Appearance | White powder |
| Color | White to Off-White |
| Merck | 14,8556 |
| BRN | 1916165 |
| pKa | 15.03±0.70(Predicted) |
| Storage Condition | 2-8°C |
| Refractive Index | 1.5000 (estimate) |
| MDL | MFCD00003631 |
| Physical and Chemical Properties | Melting point 139-142°C specific optical rotation -28 ° (c = 2, CHCl3) water-soluble INSOLUBLE |
| Use | Used as hypolipidemic drug |
| Background | sterol (sterol) is a kind of steroid existing in nature, but it has high application value. Because of its solid state, also known as sterol, it belongs to macromolecular alcohols. It is the main component of unsaponifiable matter in oils and fats. According to different sources, sterols can be divided into three categories, namely animal sterols, plant sterols and bacterial sterols. |
| physiological function | phytosterol (sitosterol) is considered as a mild free radical scavenger, to some extent, this explains the active role of phytosterols in maintaining cell membrane stability, inhibiting inflammation, preventing and treating atherosclerosis and anticancer. Anti-inflammatory and immunomodulatory effects phytosterols have the effects of anti-inflammatory, anti-infection and inhibition of bacterial and fungal reproduction, and their anti-inflammatory effects are also one of the functions discovered earlier. |
| Main properties | The amphoteric character of phytosterols makes them have the ability to block and control the fluidity of reversed-phase membranes, phytosterol is mainly hydrophobic, but because of its structure with hydroxyl group, and thus has a certain hydrophilicity, the greater the side chain, the stronger the hydrophobicity of sterol, phytosterol specific gravity slightly greater than water, insoluble in water, soluble in a variety of organic solvents. |
| Application | phytosterols have extensive biological functions in medicine and food science. In animal production, the scientific use of phytosterols can promote animal growth, improve body health and improve the quality of animal products, which has a positive effect on reducing breeding costs and improving economic benefits. As a kind of functional additive, phytosterol has broad application prospects in feed industry. At present, the mechanism of action, effective dosage form and dosage, absorption efficiency and application technology of phytosterols to improve animal growth and health have not been fully clarified, and a lot of and in-depth research is needed, to lay the foundation for its scientific and rational application. |
| uses | β-sitosterol and β-sitosterol derivatives are widely used in medicine, food, cosmetics, feed and other industries. It has the effects of lowering cholesterol, relieving cough, eliminating phlegm, inhibiting tumor and repairing tissue. For type II hyperlipidemia, atherosclerosis and chronic bronchitis, also for early cervical cancer and skin ulcers. Large doses can appear loss of appetite, Diarrhea, gastrointestinal pain and other gastrointestinal reactions. Osteomyelitis caused by ulcers, in the original disease is not used before healing. Leg Ulcers with varicose veins of the lower extremities must be treated simultaneously. β-sitosterol has the effects of lowering cholesterol, relieving cough, eliminating phlegm, inhibiting tumor and repairing tissue. It can be used as hypolipidemic drugs for type II hyperlipidemia, atherosclerosis and chronic bronchitis, also for early cervical cancer and skin ulcers. Medical raw materials and health food. Beta-sitosterol, used to supplement the diet of mice, was found to have a significant effect on body mass accumulation. A phytosterol whose structure is very similar to cholesterol, has estrogenic activity. It inhibits proliferation (G2/M arrest), nuclear replication, and polymerization of α-tubulin and microtubules in human leukemia cells. used as hypolipidemic agent |
| properties | β-sitosterol is White scale-like, needle-like crystal or crystalline powder, odorless and tasteless. Mp136-140. It is very soluble in chloroform and carbon disulfide, slightly soluble in ethanol or acetone, and insoluble in water. |
| side effects | gastrointestinal reactions such as loss of appetite, Diarrhea, gastrointestinal pain may occur at large doses. Osteomyelitis caused by ulcers, in the original disease is not used before healing. Leg Ulcers with varicose veins of the lower extremities must be treated simultaneously. |
| consumption | ≤ 2.4g/day |
| applicable food category | scope of use does not include infant food |
| approval date | 2010-03-09 |
| Announcement No. | No. 3 of 2010 |
| announcement title | on the approval of DHA algal oil, cotton Seed oligosaccharides and other 7 kinds of articles for the new resources of food and other relevant provisions of the announcement |
| Trait | white powder or granule |
| Phytosterols | ≥90% |
| Β-sitosterol | ≥30.0% |
| Campesterol | ≥15.0% |
| Stigmasterol | ≥12.0% |
| production method | with rice bran oil as raw material, the alkali soap residue is dried in an oven at a constant temperature below 80 ℃ to make the water content less than 2%, dry soap residue, small particles or powder. Methane soap residue [below 80 ℃] → dry soap residue extraction dry soap residue is added into the enamel reaction tank, and acetone (V soap residue: V acetone = 1:8) is added and stirred, the jacket distillation steam is heated, refluxed and extracted at 50-55 °c for 3-4H, cooled to 30 °c for discharge, and left to stand at 10-15 °c for 12H. The filtrate is obtained by pressure filtration. Dry soap residue [acetone] →[50-55 ℃, 3-4h] filtrate concentration, crystallization, drying the filtrate into the concentration tank, concentrated to the original volume of 1/5, to obtain concentrated liquid, the crystals were allowed to stand at room temperature for 12h and filtered to obtain a crude product, which was dried in an oven at 60 ° C. To obtain a crude product. Filtrate [concentrated] → concentrated solution [crystallized] → crude product [60 ℃]→ decolorizing and crystallizing the dried crude product. Dry the dried crude product, add 25-30 times of 95% ethanol, add hydrochloric acid for pH3-4, and heat it in water bath, after dissolving the crude product, add 10-20g/L activated carbon to micro-boil for 20min, filter while hot to obtain filtrate, and let it stand at room temperature for 12h to crystallize, the product was obtained by vacuum drying below 80 ℃. Dry crude product [decolorization] → filtrate [crystallization] → crystalline product [below 80 ℃] → finished sitosterol product. |
Our company specializes in processing and selling chemical raw materials, chemical products, pharmaceutical intermediates, veterinary medicine intermediates, dye intermediates, pigments, cosmetics raw materials and chemical reagents,
Our company has a number of sales team, service and information feedback vertical integration of a sound marketing network, products are sold throughout the country and exported to South Asia, Europe, America, Africa and other more than 20 countries and regions.
Companies adhering to the "pursuit of quality, innovation and development" business philosophy, to serve as a foundation, for the survival by the quality, seek development by science and technology, adhere to quilty comes first,fair price,good sense of customer service and responsibility. in the future hebei Nengqian import and export trade Co.,Ltd will always hold "integrity, innovation" business philosophy, to achieve honesty management, on the way of specialization, internationalization, Keep moving!
Our advantages:
1, High quality with competitive price:
1) Standard:BP/USP/EP/Enterprise standard
2) All Purity≥99%
3) We are manufacturer and can provide high quality products with factory price.
2, Fast and safe delivery
1) Parcel can be sent out in 24 hours after payment.Tracking number available
2) Secure and discreet shipment.Various transportation methods for your choice.
3) Customs pass rate ≥99%
4) We have our own agent/remailer/distributor who can help us ship our products very fast and safe,
and we have stock in there for transferring.
Product Packaging：
1) 1kg/bag (1kg net weight, 1.1kg gross weight, packed in an aluminum foil bag)
2) 25kg/drum (25kg net weight, 28kg gross weight; Packed in a cardboard-drum with two plastic-bags inside; Drum Size: 510mm high, 360mm diameter)
Storage：
Stored in a cool and dry well-closed container. Keep away from moisture and strong light/heat.
Delivery：
Usually within3-5 working days after full payment.
transport：
EMS,DHL, TNT, UPS ,FEDEX, BY AIR, BY SEA
DHL Express, FedEx and EMS for quantity less than 50KG, usually called as DDU service;
Sea shipping for quantity over 500KG; And air shipping is available for 50KG above;
For high value products, please select air shipping and DHL express for safe;
Our Service:
1. Fast Delivery: We can delivery within 24 hours upon receipt of your payment.
2. Quality can be promised. Hot sell to Worldwide.
3. Payment Terms: T/T,, t/t
4. Free Sample available at any time.
5. Tracking your order at any time. Inform your order's further new situation at any time.
6. Package: Professional packing with professional materials.
FAQ:
1.Are you a trade company or factory
We are a factory with our own trading company.
2.How do you control the quality
Our factory is equipped with professional technicians to control quality, out inspectors take sample for testing every 2 hours to ensure the quality of our production. We also accept BV, SGS or any other Third-party inspection.
3.How long is lead time
We deliver goods within 3 days for small order, 7-10 days for bulk order.
4. Where is your factory located How can I visit the factory
Our factory located in HEBEI, China.
5.Can i get some samples
Yes, we can supply free sample, but the shipping cost be paid by our customers.
6.How to start orders or make payments
Proforma invoice will be sent first after confirmation of order, enclosed our bank information.Payment by T/T,
7. How to confirm the Product Quality before placing orders
You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples.
8. How long is lead time
We deliver goods within 3 days for small order, 7-10 days for bulk order.
9. How do you treat quality complaint
First of all, our quality control will reduce the quality problem to near zero. If there is a realquality problem caused by us, we will send you free goods for replacement or refund your loss.