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Nearly an open-and-shut case for DEZ.

Nearly an open-and-shut case for DEZ

The Library of Congress estimates that 25 percent of its 14 million books have become so brittle from acids in their pages that they can't be handled. To save the rest of its collection, Library chemists are developing a process using diethylzinc (DEZ) vapors to deacidify paper (SN: 3/5/83, p.154).

In a recent report, the Congressional Office of Technology Assessment (OTA) put its qualified stamp of approval on the DEZ program. While finding that the program has a high potential for success, OTA says more data are needed to determine now long DEZ treatment will extent a book's life. The DEZ process also needs testing to compare it with alternative deacidification techniques, OTA says. A full-scale DEZ plant is scheduled to be built and operating by 1991.
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Title Annotation:diethylzinc vapors used to deacidify library book pages
Publication:Science News
Date:Jun 4, 1988
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