Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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The process of exposing archival materials to the vapor of a volatile substance, or with poisonous chemicals, such as thymol, methyl bromide (CH 3 Br), chloropicrin (CCl 3 NO 2 ), carbon tetrachloride (CCl 4 ), ethylene dichloride (C 2 H 4 Cl 2 ), or hydrogen cyanide (HCN), within a closed (and airtight) container, in order to destroy mold and/or insects. Room temperature is usually sufficient to vaporize the substances used in fumigation; however, in cases of severe or stubborn molds. heat in the range of 40 to 50° C. will increase the concentration of the vapor and increase its effectiveness. Where no special equipment, e.g., air-tight chambers, is available and the infestation is on a relatively small scale, fumigation ma be carried out by means of carbon disulfide (CS2) in an air-tight box. These methods, while more or less effective, do not confer lasting protection; therefore it may be necessary (assuming it is possible) to fumigate the areas in which the archival materials are stored. See also: FUNGI . (143 , 198 ,233 )

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