compectitive price 99-92-3 4-Aminoacetophenone High quality

Why choose Beluga chemical

1. Beluga Chemical has a professional RESEARCH and development team and strong technical force to ensure technical support and research capabilities.

2. Made in China and exported to many countries and regions at the most favorable price.

3、Our customers all over the world and have been highly valued and trusted by customers

4、We promise to reply your inquiry within 24 hours, including holidays and holidays.

5, safe and prudent shipping a variety of transportation modes for you to choose.

If you are interested, please feel free to contact us for detailed product specifications, prices, delivery times and payment terms.

Where is the advantage of white whale chemical industry

1. Chinese origin.

2、 the purity of all products >99%.

3、 high quality products and competitive prices.

4、 Sufficient inventory, fast delivery, and the ability to meet customer needs.

5、 safe and prudent shipping a variety of transportation modes for you to choose.

6、 Clearance rate of multiple ports >99%.

7、 Delivery time within 7 days after payment and 24 hours of quality after-sales service.

With rich experience and professional service,Beluga Chemical has won the trust of customers from various countries. Welcome your consultation and sample ordering. We sincerely look forward to cooperating with you!

production method

(1) Reduction by p-nitroacetophenone: Put stannous chloride and concentrated hydrochloric acid into the reaction tank, cool, and add p-nitroacetophenone with stirring. When the temperature is naturally raised to 90°C, it is rapidly cooled to 85°C, then cooled to room temperature, stirred for 1 hour, filtered, and the filter cake is added with excess sodium hydroxide solution to decompose the complex. After filtration, the crude product of p-aminoacetophenone can be obtained. When dilute ethanol is used, it can be recrystallized to obtain a refined product with a melting point of 105-106°C. The yield is 61%. The reduction reaction can also be carried out by replacing stannous chloride with iron powder and sodium chloride.

(2) Acetaminoacetophenone is prepared from acetanilide and acetic anhydride, and then hydrolyzed and neutralized. Acetic anhydride, acetophenone, and anhydrous zinc chloride are mixed and kept boiled for 5h, cool slightly, pour in concentrated hydrochloric acid, reflux and hydrolyze for 5h, put it to room temperature, add 25% sodium hydroxide to adjust the pH to 7-8, and add steam Drive off the aniline, filter with decolorizing charcoal, concentrate under reduced pressure, and cool to obtain orange-yellow crystals. Drain to a crude product. Recrystallize and purify with water again.

4- amino acetophenone uses   Purpose 1

Used as raw material for medicine asthma cough

【 Purpose 2 】Used as a sensitive reagent for determination of palladium and determination of vitamin B1

【 Purpose 3 】An intermediate of the medicine asthma cough. Also used to determine palladium and vitamin B1.

【 Purpose 4 】Palladium and vitamin B1 were measured. A photometric reagent for cerium. Sulfanilamide analog colorimetric determination.