Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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anionic (substances)

Substances, such as dyes, tannins, oils, etc., that dissolve in water and ionize so that the characteristic ion (dye, tannin, oil, etc.) is the anion and carries a negative charge. They tend to precipitate withCATIONIC (positive charge) SUBSTANCES . (98 , 306 )




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