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|Section3= }} Acetate is a negative ion, or anion, typically found in aqueous solution. It is often written with the chemical formula C2H3O2−. The neutral molecules formed by the combination of the acetate ion and a positive ion (or cation) are also commonly called "acetates". The simplest of these is hydrogen acetate, or acetic acid, with corresponding salts, esters, and the polyatomic anion CH3CO2−, or CH3COO−. Most of the approximately 5 billion kilograms of acetic acid produced annually in industry are used in the production of acetates, which usually take the form of polymers. In nature, acetate is the most common building block for biosynthesis. For example, the fatty acids are produced by connecting the two carbon atoms from acetate to a growing fatty acid.〔March, J. “Advanced Organic Chemistry” 4th Ed. J. Wiley and Sons, 1992: New York. ISBN 0-471-60180-2.〕 ==Nomenclature and common formula== When part of a salt, the formula of the acetate ion is written as CH3CO2−, C2H3O2−, or CH3COO−. Chemists abbreviate acetate as OAc− or AcO−. Thus, HOAc is the abbreviation for acetic acid, NaOAc for sodium acetate, and EtOAc for ethyl acetate.〔Zumdahl, S. S. “Chemistry” Heath, 1986: Lexington, MA. ISBN 0-669-04529-2.〕 The abbreviation "Ac" (or "AC") is also sometimes encountered in chemical formulas to indicate the acetate ion. This abbreviation is not to be confused with the symbol of actinium, the first element of the actinides series. For example, the formula for sodium acetate might be abbreviated as "NaAc", rather than "NaC2H3O2". Care should also be taken to avoid confusion with peracetic acid when using the OAc abbreviation; for clarity and to avoid errors when translated, HOAc should be avoided in literature mentioning both compounds. The systematic name for acetate is ethanoate, but the IUPAC preferred name remains the common name, acetate.〔(R-9.1 Trivial and semisystematic names retained for naming organic compounds ), ''A Guide to IUPAC Nomenclature of Organic Compounds'', IUPAC Commission on Nomenclature of Organic Chemistry〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Acetate」の詳細全文を読む スポンサード リンク
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