4-Nitrophthalic acid CAS NO.610-27-5

1. Rich experience: Our company is a professional production leading factory in China in pharmaceutical area of many years. 

2. Top quality: High quality guaranteed, once any problem is found, the package would be reshipped for you .

3. Security Shipping: Shipping by express (FedEx,UPS,DHL,EMS), by air. The most professional forwarder would be recommanded for you.

4. Fast delivery: We have stock, so we can delivery quickly once payment is received.

5. Quality service: We will give you warm after-sale service,if any question we will reply you within 24 hours.

6. Competitive prices: A discount would be given when you make a large order.

Hebei yanxi chemical co.,Itd is a professional research and development of the production of lead acetate,2-phenylethylamide enterprises.The key members of the company are established by local well-known entrepreneurs and professional engineers under the call and support of the party's"low-carbon environmental protectionsafety and stability"under the innovation in traditional production equipment and technology,the use of"high temperature cooling"and "plastic basin crystallization"technology,on the basis of reducing the cost of products to make the quality of products to the same industryWith the efforts of all the staff of the companywe have established many cooperative companies in Shan Dong,He Nan,Guang Dong and other places in recent decades. Under the close supervision of the quality inspection department of the company,we carry out production and sales in the way of "labeling",providing the most convenient and fastest service for users all over the countryCompanies in the"advance with The Timesand the city every day with the advancement of"under the guidance of the core ideasadhering to the"relying on scientific and technological innovationthe development of circular economy" of the enterprise purpose,established in the marketenhance strength,go the way of science and environmental sustainable developmentrelying on the national technology research and development center, increasing spending on research and development based on the domestic market, expand the international marketmanufacturing high quality productssincere service society,toward a modern, ecology, science and technologychemical enterprises of the world.

Production method:
4-nitrophthalimide was added to sodium hydroxide solution, heated to boiling, concentrated nitric acid was added to make the solution acidic to litmus, the solution was boiled for 3min, cooled to room temperature below, and extracted with ethyl ether. The extracted solution was dried with anhydrous sodium thioether and then steamed to remove the ethyl ether to obtain 4-nitrophthalic acid with a yield of 96%-99%.