Application: 2-fluoro-4-nitrophenol is an organic synthesis intermediate and pharmaceutical intermediate, which can be used in laboratory research and development processes and chemical production processes.
Preparation: The following steps are adopted :a) Nitrosation reaction: 2-fluorophenol is used as raw material and 2-fluoro-4-nitrosophenol is produced by nitrosation in the presence of dilute hydrochloric acid. Dilute hydrochloric acid concentration is 15-20%, preferably 15%; Nitrosation reagent is alkali metal nitrite salt or nitrite ester, preferably sodium nitrite; The nitrosation reaction temperature is -5 ~ 5℃, preferably 0℃; b) Oxidation reaction: 2-fluoro-4-nitrosophenol is oxidized with dilute nitric acid to produce 2-fluoro-4-nitrophenol. The dilute nitric acid concentration used is 15 ~ 55%, preferably 30%. The invention has the advantages that the preparation process is simple, only a very small amount of isomer is produced during nitrosation, the yield is as high as 90%, the refining is also easy, the purity can reach more than 99.5%, and the production cost is reduced.
| Melting Point | 120-122 °C
|
| Boiling Point | 281.2±25.0 °C
|
| Density | 1.4306 |
| Storage Condition | Inert atmosphere,Room Temperature |
| Solubility | Soluble in methanol
|
| pKa | 5.67±0.22
|
| BRN | 1944995 |
Our advantages:
1) Timely communication, reply within 12 hours.You can leave any messages on our whatsapp or send email to us.
2)Selecting raw materials strictly,our products are the highest purity.
3)Reasonable and competitive price.
4) Free sample for your evaluation.Customers only need to undertake the shipping fee for delivery the samples to your destionation.
5)OEM/ODM Available.Trial order is available for testing after samples.
6) Packaging can be customized according to each buyers' special request.
We guarantee that your package will pass 100% through the Mexico US, UK, Australia, Netherlands, Canada, France, Germany, Spain, Belgium, Sweden, Poland, Russian, Ukraine, Kazakhstan, Czech Republic, Slovakia, Portugal.
We have freight forwarders in these countries, and our customs clearance company will clear your parcels without any customs issues, sometimes even 1000 kg. Door to door service. Make sure you receive 100% of the goods. Let you have a good experience of our strong freight capacity.
Company Introduction
hebei yanxi chemical co., LTD who registered capital of 10 million yuan, nearly to $2 million, we have a pharmaceutical raw materials factory production of pharmaceutical raw materials, and a reagent r&d center, and we do research and development production of reagent tens of thousands of species. our aim is quality strives for the survival. Seek development by credit reputation. Our products have big price advantage in Europe South America and so on .and Our company also has the advantage of high quality in Africa. in the past two years our products has reached more than 30 countries in the world, Europe. South America. North America, southeast Asia, Africa, etc. We welcome all over the world with the best quality and lowest price friend common cooperation and common development!
After Sales Service
1) Best quality in your requirement
2)Competitive price in china market
3)Mature technical support
4)Professional logistic support
5 )Full experience of large numberscontainers loading in chinese sea port
6 )Fast shipment by reputed shipping line
7) Packing with pallet as buyer's special request
8) Best service after shipment.
9) Cargoes together with container after-sales service available
10) Full experience in export
11)Raw materials from chinese origin
FAQ
What is the way you ship?
Express: FedEx, UPS, EMS, DHL, USPS, TNT, DPD, Aramex etc
Our way of shipping the products is universal and secure.
The company name and other contents related to pharmacy are not written on the package slips.
The way of packing is regularly changed for a secure delivery.
The packages are small in order to avoid unwelcomed questions . If the order is big, then it will be divided into two or more packages
Can the packages be trackable?
YES, we provide tracking number and you can track on internet.
Where do you ship to?
Worldwide.
Do you offer domestic shipping/remail shipping?
Yes we can ship to USA/UK/Canada/Australia/Germany etc warehouse first then to you.
Do you ensure your packing , what about customs, what happens if the package is retained?
We concern a lot about our safety system, we pack the orders as secure as possible. If a package is seized at customs, reships of seized orders will be done provided you have a copy of the letter to show us. If you receive a seizure letter, please contact us immediately with a scanned copy of the seizure letter, and also a new address to have your order reshipped to.
Which payment options are available?
Bitcoin
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