acetate

acetate
/as"i tayt'/, n.
1. Chem. a salt or ester of acetic acid.
2. Also called acetate rayon. a synthetic filament, yarn, or fabric composed of a derivative of the acetic ester of cellulose, differing from viscose rayon in having greater strength when wet and greater sensitivity to high temperatures.
3. a sheet of clear plastic film fastened over the front of artwork for protection, as an overlay, or the like.
4. a slow-burning base material, cellulose triacetate, used for motion-picture film to minimize fire hazard during projection, and also for animation cells.
[1820-30; ACET- + -ATE2]

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C2H3O2- ion, a salt, ester, or acylal derived from acetic acid.

Acetates are important in the biochemical synthesis of fats from carbohydrates in plants and animals. Industrially, metal acetates are used in printing, vinyl acetate in plastic production, cellulose acetate in photographic films and textiles (one of the first synthetic fibres, often called simply acetate), and volatile organic esters as solvents.

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Universalium. 2010.

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  • acétate — [ asetat ] n. m. • 1787; de acét(ique) et suff. chim. ate ♦ Chim. Sel ou ester de l acide acétique. Acétate cuivrique (verdet). Acétate d aluminium, employé comme mordant. Acétate de cellulose, ou absolt acétate, employé dans la fabrication de… …   Encyclopédie Universelle

  • Acetate — Acétate En chimie, un acétate (le mot vient du latin acetum, le vinaigre) est un sel ou un ester de l acide acétique. La formule de l ion acétate est CH3COO. Le terme acétate peut aussi faire référence à l’acétate de cellulose, en particulier les …   Wikipédia en Français

  • acetate — [as′i tāt΄] n. [ ACET(IC) + ATE2] 1. a) a salt of acetic acid containing the monovalent, negative radical CH3COO b) an uncharged ester of this acid 2. CELLULOSE ACETATE 3 …   English World dictionary

  • Acetate — Ac e*tate, n. [L. acetum vinegar, fr. acere to be sour.] (Chem.) A salt formed by the union of acetic acid with a base or positive radical; as, acetate of lead, acetate of potash. [1913 Webster] …   The Collaborative International Dictionary of English

  • acetate — ► NOUN 1) Chemistry a salt or ester of acetic acid. 2) fibre or plastic made of cellulose acetate. 3) a transparency made of cellulose acetate film …   English terms dictionary

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  • acetate — UK US /ˈæsɪteɪt/ noun ► [C] MEETINGS a thin piece of clear plastic with writing or drawing on it that you can show on a wall or screen using an overhead projector: »He was busy preparing acetates for his presentation …   Financial and business terms

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