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colorant, color agent

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colorant, color agent (In French matière colorante) materials that change the colors of objects and substances; there is a rough distinction between dyes and pigments (color index) as well as coverage capacity, trueness, color strength or scatter capability (DIN 55943), white, chromatic, black, gloss or luminescent colorants (DIN 55944), natural and synthetic colorants (DIN 55944).