Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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Organic compounds formed by the union of an acid and an alcohol (or a phenol) with the elimination of water, and which during HYDROLYSIS break down to these component parts. An ester may also be regarded simply as an organic acid. Esters may be specified either by constituents (e.g., ethyl silicate may be considered to be the silicone ester or ethyl alcohol), or by the ethyl ester or silicic acid. Esters are sometimes used to remove fat and grease stains from paper, and, less frequently, to inhibit bookworms. (233 , 235 )

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