Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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mordant dyes

Dyes of varied constitution, all of which possess an acid character. Because of the presence of hydroxyl or carboxyl groups in their molecules they are capable of forming lakes with metallic mordants. The methods by which the mordant colors can be attached to a fiber depend on the nature of both the dyestuff and the fiber. (235 )

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