<unk>  , systematically named ethanoic<unk>  , is an<unk> ic, colourless liquid and organic compound with the chemical formula CH3COOH (also written as CH3CO2H, C2H4O2, or HC2H3O2). Vinegar is no less than 4%<unk>  by volume, making<unk>  the main component of vinegar apart from water and other trace elements.<unk>  is the second simplest carboxylic<unk>  (after formic<unk> . It is an important chemical reagent and industrial chemical, used primarily in the production of cellulose acetate for photographic film, polyvinyl acetate for wood glue, and synthetic fibres and fabrics. In households, diluted<unk>  is often used in descaling agents. In the food industry,<unk>  is controlled by the food additive code E260 as an<unk> ity regulator and as a condiment. In biochemistry, the acetyl group, derived from<unk> , is fundamental to all forms of life. When bound to coenzyme A, it is central to the metabolism of carbohydrates and fats. The global demand for<unk>  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 methanol. Vinegar is mostly dilute<unk> , often produced by fermentation and subsequent oxidation of ethanol.
Acetic acid
Cefazolin
Cephalosporin
Nalidixic acid
Carbenicillin
Extended-spectrum penicillin
Resistin
Ciprofloxacin