Ethylene in the ethylene oxidation catalyst (the catalyst used is palladium chloride: PdCl2, cupric chloride: CuCl2 and manganese acetate: (CH3COO) 2Mn) in the presence of the reaction with oxygen occurs. This reaction can be considered as the first ethylene oxide into acetaldehyde acetic acid, acetaldehyde oxidation through the legal system. Butane oxidation of butane oxidation, also known as direct oxidation method, which is using butane as the main raw material, a method prepared by air oxidation of acetic acid is the main acid synthesis. 2CH3CH2CH2CH3 + 5O2 = 4CH3COOH + 2H2O Topsoe method (synthesis gas method) Low Pressure Methanol carbonylation of methanol, co is obtained from natural gas or water gas, methanol is an important chemical raw material supply and its price fluctuations. Topsoe law to a single natural gas or coal as raw materials. The first step: synthesis gas catalyst to generate methanol and dimethyl ether; the second part: methanol and dimethyl ether (both without purification) and co carbonylation to acetic acid. Also called two-step process. Dimer acid dimer, the dotted line represents hydrogen bonds acetic crystal structure revealed by intermolecular hydrogen bonding as dimers (also known as di conclusion thereof), dimers are also present in the vapor state 120 ℃. Dimers have a high stability of glacial acetic acid acidity, now determine the molecular weight by freezing point depression method and X-ray diffraction proved that small molecular weight carboxylic acids such as formic acid, acetic acid in solid and liquid, or gaseous form a dimer . When the acetic acid and water-soluble and when hydrogen bond between dimers will soon break. Other acids have similar dimerization phenomenon. (Both ends of the connection H) solvent liquid acetic acid is a hydrophilic (polar) protonated solvent, similar to ethanol and water. Because a dielectric constant of 6.2, which is not only capable of dissolving polar compounds, such as inorganic salts and sugars wholesale glacial acetic acid, it is possible to dissolve the non-polar compound acetic acid plant health, such as oil or some elements of the molecule, such as sulfur and iodine. It also can be mixed with many polar and non-polar solvents, such as water, chloroform, hexane. Solubility and miscibility of acetic acid makes it a widely used chemical in chemicals. Acetic acid plant health, business inner glacial acetic acid, Zhengzhou Longda Chemical (Views) provided by the Zhengzhou Longda Chemical Products Co., Ltd. Zhengzhou Longda Chemical Products Co., Ltd. (www.longdahuagong.com/) is specialized in "sodium hydroxide (caustic soda, liquid, flake, solid), sodium hypochlorite, hydrochloric acid, sulfuric acid, nitric" of the enterprise, the company adhering to the "integrity management, hard service "concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Manager Xu.