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: Congtai District, La Defense North
MaxCard:
Ms.AnnaCAS NO.454-92-2
Pharmaceutical grade(1-50)KilogramPharmaceutical grade(51-99)Kilogram
Our Advantage
Rich Experience
Our products are sold all over Europe,North&South America, Sino-East, Asia and pacific area as well as Africa,we establish long term.
Quality service
Company cooperates with research institutes. We strictly control the process of raw materials up to finished product.
24 hour service
Quick and clear response to customers questions. Warm after sale service, we will help to solve the problems in your usage.
High quality
Dedicated to serving customers first, we provide reasonable prices, high quality products.
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.
| Molecular Formula | C8H5F3O2 |
| Molar Mass | 190.12 |
| Density | 1.3173 (estimate) |
| Melting Point | 104-106°C(lit.) |
| Boling Point | 238.5°C775mm Hg(lit.) |
| Flash Point | 237-240°C |
| Vapor Presure | 0.0241mmHg at 25°C |
| Appearance | Bright yellow crystalline powder |
| Color | White |
| BRN | 2049239 |
| pKa | 3.77±0.10(Predicted) |
| Storage Condition | Keep in dark place,Sealed in dry,Room Temperature |
| MDL | MFCD00002519 |
| Physical and Chemical Properties | Melting point 104-106°C boiling point 238.4°C (775 mmHg) |
| overview | 3-trifluoromethylbenzoic acid is a chemical intermediate of medicine and pesticide, which is widely used in medicine, pesticide and other fields. At present, there are mainly the following preparation methods: 1) using m-difluorotoluene as raw material, heating and reflux hydrolysis with 30% fuming sulfuric acid, cooling and adding to ice water, filtering to obtain the product with a yield of 66.1%. The preparation method has a low yield and produces a large amount of waste acid, which does not meet the requirements of green production. 2) Using meta-trifluoromethyl chloride as raw material, first chlorinated with chlorine under the action of an initiator at 50-90 ℃, and then refluxed with 2.5-10% sodium hydroxide for hydrolysis, neutralization and filtration to obtain inter-product trifluoromethyl benzoic acid, the two-step total yield is 76.5-85.5%. The chlorine gas used in the preparation method will be greatly restricted in actual use, and it is a two-step reaction, and the total yield is not very high. |
| preparation | add 100g of intermediate-(trifluoromethyl) benzyl chloride and 0.5g of initiator azodiisoheptonitrile in a 250ml three-mouth flask, raise the temperature to 70 ℃, start to introduce dry chlorine gas, control the chlorine passing temperature to be kept between 70-75 ℃, finish the chlorine passing when the specific gravity of the reaction solution reaches 1.48-1.50, and remove the residual chlorine, it was steamed out at 53-55 ℃ under a reduced-pressure 2mmHg column (German Patent DE2548970(1997) reported that under a reduced-pressure 11mmHg column, bp87 ℃), and 127g of 1-(trichloromethyl)-3-(trifluoromethyl) benzene with a content of 96.9% was obtained, with a yield of 91.8%. Then 50g of prepared 1-(trichloromethyl)-3-(trifluoromethyl) benzene and 1600g of 2.5% NaOH aqueous solution are put into a 3000ml three-mouth flask, heated and refluxed for 12 hours, neutralized the pH of the reaction solution with 10% hydrochloric acid to 4, precipitated by white precipitate, filtered by suction, washed with a small amount of water, and dried by vacuum at 60 ℃ for 10 hours to obtain 32.4g of crude white powdered m-(trifluoromethyl) benzoic acid, the content is 97.3%, the melting point is 103-104 ℃, and the reaction yield is 88.6%. After recrystallization of the crude product by CCl4, the melting point is 105.2-105.5 ℃, and the melting point of m-(trifluoromethyl) benzoic acid with 99% purity is 105-106 ℃. |
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.
Packing:
1. Inner double plastic bags----25kg/Fiber drum (35*35*45cm, GW: 28kg, NW: 25kg);
2. Inner double plastic bags----5kg/Aluminum foil bag (GW: 6.5kg, NW: 5kg).
3. Inner double plastic bags----1kg/Aluminum foil bag (GW: 1.5kg, NW: 1kg).
P.S.: we accept packaging customization.
Delivery:
1. Stock products are normally shipping within 3 working days.
2. For rush delivery, please contact our sales team for particular arrangement.
Shipping Details:
1. We ship goods via DHL, Fedex, UPS, TNT, China post, NL Post and other couriers, weight from 10g to 1000kg or even bulker.
2. Shipping details & shipping documents will be provided and sent by email.
3. We keep tracking the shippment until clients well received.
4. After years export shipping experience, with professional and experienced cooperated forwarders, we ensure that goods can be delivered in multiple ways safetly and efficiently.
About us
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,
We have compalete sales and service team , 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!
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.
You can send us your product specifications and requests,we will manufacture the products according to your requests.
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.