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.623-00-7
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:
| Molar Mass | 182.02 |
| Density | 1,562 g/cm3 |
| Melting Point | 110-115°C(lit.) |
| Boling Point | 235-237°C(lit.) |
| Flash Point | 130°C |
| Water Solubility | Very slightly soluble in water(0.2g/L). Soluble in alcohol and ether. |
| Solubility | 0.2g/l |
| Vapor Presure | 0.046mmHg at 25°C |
| Appearance | White crystal |
| Color | White to light yellow or flakes |
| BRN | 2041518 |
| Storage Condition | Sealed in dry,Room Temperature |
| Refractive Index | 1.5999 (estimate) |
| MDL | MFCD00001811 |
| Physical and Chemical Properties | The character of the product is white crystal |
| Use | Pharmaceutical Intermediates, pigment intermediates |
| Use | 4-bromobenzonitrile in organic synthesis is used to synthesize 4-iodobenzonitrile by light-induced aromatic Finkelstein iodination. It can also be used as a test compound for aryl halides to develop more green reaction conditions for Suzuki cross-coupling between aryl halides and Phenylboronic acids. 4-bromobenzonitrile is classified as an organic nitrile, which is a commonly used solvent and can be further reacted for various applications, such as the manufacture of polymers and pharmaceutical intermediates and other organic chemicals. |
| Application | p-bromophenonitrile, also known as 4-bromophenonitrile, is an important Bromo fine chemical, mainly used in the field of medicine and organic synthesis, used as pharmaceutical intermediates, pigment intermediates. |
| preparation | 1. Synthesis of p-bromobenzaldehyde oxime p-bromobenzaldehyde, hydroxylamine hydrochloride and water were added in a certain proportion to a flask equipped with a stirrer, a condenser and a thermometer, heated and stirred, and reacted at 70-75 ° C. For 1 hour. The white solid was obtained by cooling, filtering and drying, and prepared for the next experiment. The purity of the solid was 99.2% by gas chromatography. 2. Synthesis of p-bromobenzonitrile the p-bromobenzaldehyde oxime and the formic acid dried over anhydrous sodium sulfate were put into a flask with a stirrer, a condenser and a thermometer in a certain proportion, refluxed for 1.5 h under stirring, cooled, filtered, the filter cake was washed with water until neutral to give a white solid with a purity of 99.3% as determined. The 100 ° C. To 105 ° C. Fraction was collected by atmospheric distillation after the formic acid filtrate was mixed for several times, and then dried over anhydrous sodium sulfate. |
| production method | ① cuprous cyanide double salt solution 208g(2.1mol) cuprous chloride was suspended in 1L of water, and then 35g(98%,7.1mol) a solution of sodium cyanide dissolved in 1L of water is added with stirring, and the cuprous chloride is changed to cuprous cyanide, which is then dissolved (colorless) with an excess of sodium cyanide and with the complex of the double salt formed, and the reaction is exothermic, cooling is not required. ② diazotization 1.15 (relative density 31%,) hydrochloric acid was added to ml of water, heated to 70 ℃, and 345g(2mol) of p-bromoaniline was added under stirring, and dissolved in Hydrochloride by fully stirring, then 200ml of industrial hydrochloric acid was added, and fine crystals were precipitated after cooling. Internal ice was added to control about 6 ° C., and a solution of 142g(2mol) of sodium nitrite dissolved in 200ml of water was slowly added with stirring from the liquid surface through a separatory funnel. After the addition, stirring was continued for 10min, at which time the reaction volume was 3L (there was a small amount of suspended undissolved, which appeared to be much, but there was little suspended matter by filtration, which was the diazoamino compound). The diazonium salt solution was slowly added to the cuprous cyanide solution which was warmed to 50-60 ° C. With stirring, and reacted immediately to release nitrogen gas. The product of the first addition of 1/3 of the diazonium salt solution was a brown-red oil (fluid), and a brown-red solid was formed shortly after the addition was continued, and the mixture was stirred for 0.5h after the addition was completed. After standing for 3H, it was filtered off, washed with water and air-dried to give 360g of product. Add 20g of sodium bisulfite to water vapor distillation of the brown-red product in a 2L three-necked flask, and collect the 6-8L distillate until there is no distillation (about 6h), and filter out the crystals, 210g of product were obtained after air-drying. The melting point was 102-110 °c. |
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.