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"Acetic acid is the second simplest carboxylic acid (after formic acid). It consists of a methyl group attached to a carboxyl group. 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 acetic acid is often used in descaling agents. In the food industry, acetic acid is controlled by the food additive code E260 as an acidity regulator and as a condiment. As a food additive it is approved for usage in many countries, including Canada,[6] the European Union,[7] the United States,[8] Australia and New Zealand.[9]

 In biochemistry, the acetyl group, derived from acetic acid, 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 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 methanol.[10] Vinegar is mostly dilute acetic acid, often produced by fermentation and subsequent oxidation of ethanol."

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"Vinegar is typically 4–18% acetic acid by mass. Vinegar is used directly as a condiment, and in the pickling of vegetables and other foods. "

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"Interstellar acetic acid was discovered in 1996 by a team led by David Mehringer[75] using the former Berkeley-Illinois-Maryland Association array at the Hat Creek Radio Observatory and the former Millimeter Array located at the Owens Valley Radio Observatory.

 It was first detected in the Sagittarius B2 North molecular cloud (also known as the Sgr B2 Large Molecule Heimat source).

 Acetic acid has the distinction of being the first molecule discovered in the interstellar medium using solely radio interferometers; in all previous ISM molecular discoveries made in the millimetre and centimetre wavelength regimes, single dish radio telescopes were at least partly responsible for the detections."