industryinchina
China B2B industry platform for sales, marketing and more
Industry News

How High Purity Industrial Glacial Acetic Acid Is Converted To Ethanol

2023-09-20715 Views

High purity industrial glacial acetic acid is a typical acid among carboxylic acids, it is a multipurpose chemical widely known for its acidic smell and taste, as it is the main active ingredient in vinegar, it is also used as a preservative, Many foods are kept in acetic acid because bacteria cannot survive in acidic environments, and acetic acid is produced when ethanol dissolves.


High purity industrial glacial acetic acid is a series of organic compounds containing carboxyl groups, and there are many ways to produce them. A common method is the oxidation of primary alcohols. The primary alcohol is first oxidized to an aldehyde, which is then converted into an acid. The alcohol is oxidized using a total potassium chromate solution in the presence of dilute sulfuric acid, where the chromate ion is the oxidant, and dilute sulfuric acid is used to acidify the solution.


Acidification of potassium dichromate solution with dilute sulfuric acid, oxidation of ethanol to acetic acid: High purity industrial glacial acetic acid is heated to reflux with a mixture of excess potassium dichromate solution and dilute sulfuric acid by heating the mixture in a combustion flask, where condensation The vaporizer is placed vertically in the flask to liquefy any vapors to reflux, preventing any form of aldehyde from volatilizing before complete oxidation occurs. Excess oxidant is used to ensure that there is enough ethanol to convert to carboxylic acid. During the reaction, potassium dichromate changes from orange to green and reduces to chromium sulfate. Ethanol is first oxidized to acetaldehyde, a reaction that produces water, which then oxidizes the mixture further. When the oxidation is complete, the acetaldehyde is converted to acetic acid, which has a very strong odor, like vinegar, and the solution is distilled to remove the water.