A flammable Beijing acrylic vapor and air can form explosive mixtures of acrylic acid, in case of fire, high-heat combustion caused the explosion. It can react with oxidants. In case of high fever, can occur polymerization reaction and emit heat and large containers ruptured and caused the explosion. When exposed to heat, light, water, peroxide and iron easy self-polymerization and cause an explosion. [4] 2, with a double bond in a joint response and carboxyl functional groups can occur addition reaction, the functional groups and the transesterification reaction, the long preparation of polycyclic and heterocyclic compounds, hydrogen easily reduced to acid, base case can be decomposed into formic acid and acetic acid. [2] 2. cyanide ethanol: The method with chloroethanol and sodium cyanide as raw materials, the reaction of cyanide in ethanol, the ethanol in the presence of sulfuric acid cyanide at 175 ℃ hydrolysis of acid: When the hydrolysis reaction is carried out in methanol, the acrylic acid methyl ester; [2] 3. β - propiolactone method: This method of raw materials for the ketene, it is also known ketene method uses acrylic acid, reaction is as follows: first the acid cleavage of ketene, and then reacted with anhydrous formaldehyde generated β- propiolactone; used as a catalyst in the 140 ~ 180 ℃, 2.5 ~ 25MPa, the propiolactone contacted with hot 100% phosphoric acid, acrylic acid isomers. With β - propiolactone method for producing acrylic acid, high product purity, the yield is higher, by-products and unreacted raw materials can be recycled, and suitable for continuous production, but it is required acid as a raw material, especially because propiolactone is considered to be a carcinogen, therefore the law is no longer on the industrial uses; [2] acrylic _ Hebei Xiang dry chemical (certified) _ Langfang Cheung acrylic stem from Jinan Chemical Limited. Jinan Cheung Dry Chemical Co. (www.xiangqianhuagong.com) (www.dilunyierchun.com) Shandong Jinan, alcohols leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Cheung dry chemical leadership with the staff warmly welcome all inquiries negotiations to create a dry chemical Xiang a better future.