Acetic Acid
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     Acetic acid  systematically named ethanoic acid   is a colourless liquid organic compound.The global demand for acetic acid is about 6.5 million metric tons per year (Mt/a), of which approximately 1.5 Mt/a is met by recycling; the remainder is manufactured from pertrochemical feedstock. As a chemical reagent, biological sources of acetic acid are of interest, but generally cannot compete economically. Vinegar is dilute acetic acid, often produced by fermentation and subsequent oxidation of ethanol.




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