Acetic Acid

Acetic acid /əˈsiːtɨk/ (systematically named ethanoic acid /ˌɛθəˈnoʊɨk/) is an organic compound with the chemical formula CH3CO2H (also written as CH3COOH or C2H4O2). It is a colourless liquid that when undiluted is also called glacial acetic acid. Acetic acid is the main component of vinegar (apart from water; vinegar is roughly 8% acetic acid by volume), and has a distinctive sour taste and pungent smell. Besides its production as household vinegar, it is mainly produced as a precursor to polyvinylacetate and cellulose acetate. Although it is classified as a weak acid, concentrated acetic acid is corrosive, and attacks the skin.

Acetic acid is one of the simplest carboxylic acids. It is an important chemical reagent and industrial chemical, mainly used in the production of cellulose acetate mainly for photographic film and polyvinyl acetate for wood glue, as well as synthetic fibres and fabrics. In households, diluted acetic acid is often used in descaling agents. In the food industry, acetic acid is used under the food additive code E260 as an acidity regulator and as a condiment. As a food additive it is approved for usage in the EU, USA and Australia and New Zealand.

The global demand of acetic acid is around 6.5 million tonnes per year (Mt/a), of which approximately 1.5 Mt/a is met by recycling; the remainder is manufactured from petrochemical feedstock. As a chemical reagent, biological sources of acetic acid are of interest but generally uncompetitive. Vinegar is dilute acetic acid, often produced by fermentation and subsequent oxidation of ethanol.

Read more about Acetic Acid:  Nomenclature, History, Production, Uses, Safety

Other articles related to "acetic acid, acid, acetic, acids":

Acetic Acid - Safety
... Concentrated acetic acid is corrosive to skin and must, therefore, be handled with appropriate care, since it can cause skin burns, permanent eye damage, and ... Concentrated acetic acid can be ignited with difficulty in the laboratory ... The hazards of solutions of acetic acid depend on the concentration ...
Sodium Diacetate - Preparation and Structure
... The salt forms upon half-neutralization of acetic acid followed by evaporation of the solution ... of homoassociation, an effect that enhances the acidity of acetic acid in concentrated solution 2 CH3CO2H + NaOH → Na+- + H2O Also described as the sodium acid salt of acetic acid, is best ...
Manganese(III) Acetate
... this compound crystallizes as a linear coordination polymer, with an additional acetic acid molecule bridging between manganese atoms on consecutive three-manganese clusters ... potassium permanganate and manganese(II) acetate in acetic acid addition of acetic anhydride to the reaction produces the anhydrous form ... It can oxidize alkenes via addition of acetic acid to form lactones This process is thought to proceed via the formation of a •CH2CO2H radical intermediate ...
Ethanol Metabolism - Thermodynamic Considerations - Energy Thermodynamics - Energy Calculations
... Complete Reaction C2H6O(Ethanol)→C2H4O(Acetaldehyde)→C2H4O2(acetic Acid) →Acetyl-CoA→3H2O+2CO2 ... Step Two Ethanal −127.6 kJ/mol Acetic Acid −389.9 kJ/mol ΔGf2 = −389.9 + 127.6 = −262.3 kJ/mol (Exergonic) ΣΔGf = −215.1 kJ/mol (Exergonic) Step Four (Because the Gibbs energy is a ... Acetic Acid −389.9 kJ/mol 3H2O+2CO2 −1 500.1 kJ/mol ΔGf4 = −1 500 + 389.6 = −1 110.5 kJ/mol (Exergonic) ΣΔGf = −1 325.3 kJ/mol (Exergonic) ...
Coates Law Of Maturity - Effects On Wine
... This is due to the esterification of the acids, combining with alcohols in complex array to form esters ... other alcoholic beverages during the aging process is an example of acid-catalysed esterification ... Over time, the acidity of the acetic acid and tannins in an aging wine will catalytically protonate other organic acids (including acetic acid itself), encouraging ethanol to react as a nucleophile ...