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Acetic anhydride, or ethanoic anhydride, is the chemical compound with the formula (CH 3 CO) 2 O. Commonly abbreviated Ac 2 O , it is the simplest isolable anhydride of a carboxylic acid and is widely used as a reagent in organic synthesis .
23 Ιαν 2023 · This page explains what acid anhydrides are and looks at their simple physical properties such as boiling points. It introduces their chemical reactivity in a general way.
Description. Acetic anhydride appears as a clear colorless liquid with a strong odor of vinegar. Flash point 129 °F. Corrosive to metals and tissue. Density 9.0 lb /gal. Used to make fibers, plastics, pharmaceuticals, dyes, and explosives. CAMEO Chemicals. Acetic anhydride is an acyclic carboxylic anhydride derived from acetic acid.
Formula: C 4 H 6 O 3. Molecular weight: 102.0886. IUPAC Standard InChI:InChI=1S/C4H6O3/c1-3 (5)7-4 (2)6/h1-2H3 Copy. IUPAC Standard InChIKey:WFDIJRYMOXRFFG-UHFFFAOYSA-N Copy. CAS Registry Number: 108-24-7.
If you took two ethanoic acid molecules and removed a molecule of water between them you would get the acid anhydride, ethanoic anhydride (old name: acetic anhydride). You can actually make ethanoic anhydride by dehydrating ethanoic acid, but it is normally made in a more efficient, round-about way.
Formula: C 4 H 6 O 3. Molecular weight: 102.0886. IUPAC Standard InChI: InChI=1S/C4H6O3/c1-3 (5)7-4 (2)6/h1-2H3. IUPAC Standard InChIKey: WFDIJRYMOXRFFG-UHFFFAOYSA-N. CAS Registry Number: 108-24-7. Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file.
Acetic anhydride dissolves in water to approximately 2.6% by weight. Aqueous solutions have limited stability because, like most acid anhydrides, acetic anhydride hydrolyses to give acetic acid: [6] (CH 3 CO) 2 O + H 2 O → 2 CH 3 CO 2 H
