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.477-90-7
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:
| Melting Point | 237-240°C(lit.) |
| Boling Point | 386.03°C (rough estimate) |
| Specific Rotation(α) | D18 -37.7° (c = 1.96 in ethanol); D24 -45.3° (c = 0.51 for anhydr in water) |
| Flash Point | 250.6°C |
| Solubility | Dissolve in methanol, slightly soluble in water or ethanol. |
| Vapor Presure | 2.92E-18mmHg at 25°C |
| Appearance | White loose needle crystal or crystalline powder |
| Color | White to Off-White |
| Maximum wavelength(λmax) | ['277nm(EtOH)(lit.)'] |
| pKa | 8.26±0.70(Predicted) |
| Storage Condition | -20°C |
| Refractive Index | 1.6550 (estimate) |
| MDL | MFCD00167248 |
| Physical and Chemical Properties | White loose needle-like crystals or crystalline powder. Melting point 238 °c. Soluble in water, soluble in alcohol. Odorless, bitter, and gradually discolored when exposed to light and heat. |
| Use | Antitussive and expectorant for prevention and treatment of chronic bronchitis |
| pharmacological effects | bergenin, also known as dwarf tea element, is Bergenia purpurscens(Hook.f.et Thoms.)Engl. A needle-like or crystalline powder extracted from the whole plant. Rock cabbage is a new variety in the 2015 edition of the Pharmacopoeia. Rock cabbage is mainly produced in Sichuan, Yunnan, Tibet and other places. Harvest in spring and autumn, wash away the sediment, remove the decayed leaves of the root, and dry in the sun. (1) Bergenin intraperitoneal injection and gavage have obvious antitussive effect on mice and cats. According to animal experiments, the antitussive mechanism of bergenin is to inhibit the central center, but it is different from morphine central antitussive drugs. It is characterized by selectively inhibiting the cough center, but has no obvious enhancement and inhibitory effect on other centers. (2) bergenin has a good broad-spectrum antibacterial effect, can inhibit Shigella, Staphylococcus aureus and Pseudomonas aeruginosa, and has antiviral effect; bergenin has the effect of promoting the recovery of diseased tissues. |
| source plant | rock cabbage is also known as dull cabbage, rock wall vegetable, red rock 7. rock seven. It was first published in "A Study of Plant Name". Bergeniapurpurascens (Hook. f. et Thoms.)Engl. Or thick-leaved rock cabbage B. crassifolia (L.) Fritsch rhizome or whole grass. The former is distributed in Yunnan, Sichuan, Tibet and other provinces; the latter is distributed in the Altai Mountains of Xinjiang. Used medicinal materials for the Naxi people. This product is bitter, astringent and flat in nature. Function expectorant and antitussive, astringent and hemostatic, antidiarrheal. Indications of cough, hematemesis, hemoptysis, hematochezia, functional uterine bleeding, traumatic bleeding, diarrhea, dysentery, turbidity, red leucorrhea and other syndromes. If this product is decocted with Ajuga vulgaris, or rock cabbage slices can be used to treat chronic bronchitis; with Baibu, lily, asparagus, Ophiopogon japonicus, etc., it can be used to treat tuberculosis and cough. In addition, this product is also used for rheumatic pain, bruises, and has the effect of relaxing muscles and activating collaterals. It is also used as a tonic and strong medicine to treat physical deficiency and dizziness. You can still use topical tamping to treat yellow water sores. Fried clothes, 6~12g. Experimental study: The whole grass of Chinese cabbage contains bergenin and other coumarins. The rhizome contains bergenin. The root of thick-leafed rock cabbage contains arbutol glycosides. Tannin. Chinese cabbage has antitussive effect on mice. the antitussive effect of 300 mg/kg is similar to codeine phosphate 60 mg/kg. Bergenin also has antitussive effect. It can be used to treat chronic tracheitis. The immersion agent has an inhibitory effect on Shigella in the test tube, and can treat dysentery and diarrhea. thick leaf rock cabbage is rich in vitamin P, its water extract to rats long-term oral, can increase capillary resistance, no toxic reaction. Figure 1 shows rock cabbage. |
| efficacy | bergenin is an effective ingredient of Chinese cabbage, which has antitussive and expectorant effects. it is a "special effect" drug for treating chronic bronchitis, emphysema, bronchial asthma and other respiratory diseases. A variety of compound preparations using bergenin as raw material have been used for clinical treatment of chronic bronchitis, chronic bronchitis, etc. For example, compound bergenin tablets developed by Yunnan Baiyao Group and Bailing compound bergenin tablets developed by Guizhou Bailing Pharmaceutical are all Chinese patent medicines for the treatment of chronic bronchitis. In addition, bergenin also has the function of scavenging free radicals and inhibiting lipid peroxidation, and has no toxic side effects. This effect is just in line with the popular skin care concepts such as anti-oxidation and free radical scavenging proposed by the cosmetics industry in recent years. Therefore, many cosmetics manufacturers have added rock cabbage as an antioxidant raw material to skin care products. |
| principle of action | bergenin has analgesic, sedative, hypnotic and stabilizing effects. There is no respiratory inhibition at the therapeutic dose, and it does not cause gastrointestinal smooth muscle spasm. It has a good effect on chronic persistent pain and internal organ blunt pain, and a poor effect on acute acute pain (such as postoperative pain, traumatic pain, etc.) and advanced cancer pain. While producing analgesic effect, it can cause sedation and hypnosis. |
| apply | for chronic bronchitis. The original medicinal material "Rock Cabbage" of this product is sweet, astringent and cool in nature. Function to relieve lung cough, stop bleeding and relieve diarrhea, promote blood circulation and dredge collaterals, strong, used for tuberculosis cough, hemoptysis, hematochezia, diarrhea, rheumatic arthralgia, bruises, etc. |
| use | antitussive and expectorant. For the treatment of chronic bronchitis. antitussive and expectorant, for the prevention and treatment of chronic bronchitis by inhibiting the formation of interleukin 1beta and tumor necrosis factor alpha. |
| production method | crude medicine (asilam or asilis) coarse powder is taken, soaked and boiled with 95% ethanol, the obtained ethanol solution is concentrated to recover ethanol, and concentrated ammonia water is added to the pH9-10 solution to precipitate and precipitate the crude bergenin. The crude product is dissolved in ethanol, decolorized with activated carbon, and recrystallized to obtain the finished product of bergenin, and the yield is 1.5% based on crude drugs. |
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.