Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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formaldehyde

A very reactive aldehyde (HCHO), that is a colorless, pungent, irritating, combustible gas when pure, but is conveniently handled in the form of aqueous solutions or solid polymers. It is usually prepared by the oxidation of methanol or gaseous hydrocarbons. It has been used to kill, or inhibit, bookworms, and is used in the manufacture of some leathers, in the treatment of certain dyestuffs to render them fast to washing, and for bleaching archival papers. Its tanning properties stem from its ability to render gelatin insoluble in water. See also:ALDEHYDE TANNING ; COMBINATION OIL TANNAGE ; FORMALIN .




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