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 18732968538
Mobile: +86 18732968538
Tel: +86 18732968538
Fax: 4001020630
URL: https://www.nengqianchemical.com/
Province/state: Hebei
City: Handan
Street: No.1722, Block C, Yangguang Xinzhuo Plaza, 256 Renmin West Road, Fuxing District, Handan City, Hebei Province
MaxCard:
Ms.AnnaCAS NO.402-45-9
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:
| Molar Mass | 162.11 |
| Density | 1.3226 (estimate) |
| Melting Point | 45-47°C(lit.) |
| Boling Point | 71.5-72 °C (8 mmHg) |
| Flash Point | 183°F |
| Water Solubility | Insoluble in water |
| Vapor Presure | 0.506mmHg at 25°C |
| Appearance | yellowish brown crystals |
| Color | White to yellow-brown |
| BRN | 1637019 |
| pKa | pK1:8.675 (25°C) |
| Storage Condition | Store at <= 20°C. |
| Refractive Index | 1.457 |
| MDL | MFCD00002363 |
| Physical and Chemical Properties | Melting point 40-46°C boiling point 71.5-72°C (8 mmHg) flash point 83°C |
| Use | Used as pharmaceutical, pesticide intermediates |
preparationstep 1. pretreatment of strongly acidic cation exchange resin: 10g resin is put into a 1000mL beaker, and the resin (macroporous strongly acidic styrene cation exchange resin or strong acid 732 cation resin) is soaked and washed with clear water, place it in the exchange column and soak the resin in a hydrochloric acid solution with a mass percentage concentration of 4-5% for 2-4 hours, then drain the hydrochloric acid solution, and finally rinse with clear water until neutral.
step 2: in a 100mL three-mouth flask, 0.1mol(16.1g) p-trifluoromethylaniline and 16.1g macroporous strongly acidic styrene cation exchange resin are sequentially added, the pre-prepared sodium nitrite aqueous solution (0.1mol,6.9g sodium nitrite dissolved in 6mL deionized water) is dripped under stirring, mixed and stirred at a controlled temperature of 0 ℃ for 2 hours, and diazotization reaction is carried out. after the reaction is completed, the mixture is filtered with an 80-100 mesh sieve, the strongly acidic cation exchange resin is separated; the filtrate is heated to 95~100 ℃ and the hydrolysis reaction is directly carried out for 1 hour. After the hydrolysis is completed, the water is removed by atmospheric distillation, and the 71~72 ℃ fraction is collected by vacuum distillation (8mmHg) The corresponding target product p-trifluoromethylphenol has a 90% yield; the separated cation exchange resin needs to be regenerated, and it is soaked in an exchange column with a mass percentage concentration of 8% hydrochloric acid for 2 hours, after draining the hydrochloric acid solution, finally washing with deionized water until pH = 4.5~6.5, it can be recycled, and the next batch of synthesis reaction can be carried out according to the material ratio of the previous batch.Preparation methodChlorosilane and bromotrifluoromethane react at -59 ℃ to produce trifluoromethyl silane, trifluoromethyl silane and benzoquinone in the presence of a catalyst React to obtain 4-triethylsiloxyl-4-trifluoromethyl -2, 5-cyclohexadien-1-one, and zinc powder is reduced to obtain p-trifluoromethyl phenol with a yield of 71%. This method avoids the use of hydrofluoric acid in the traditional process, but the reaction must be carried out under anhydrous conditions. If there is water, under the action of water and alkali, trifluoromethylsilane will quickly become silanol. The catalysts used in the reaction are all bases. There is no connection between the strength of the base and the catalytic activity. The role of the catalyst in the reaction is not clear, but without a catalyst, the reaction cannot proceed.usep-trifluoromethylphenol is an important fluorine-containing organic medicine and pesticide intermediate, which can be widely used in a variety of new anticancer drugs, anti-AIDS drugs, The synthesis of diabetes drugs, anti-inflammatory drugs and the development of pesticides and herbicides.
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.