'The chemistry of synthetic dyes and pigments' -- subject(s):
Synthetic products, Chemistry, Pigments, Dyes and dyeing
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These substances are called dyes, pigments.
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Pigments are not carried up filter paper, dyes are. But they are
carried up in solvents.
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The textile materials are dyed or given color by means of
various available dyes and pigments. There are various dyes such as
reactive dyes,azoic dyes ,direct dyes,etc. The dyes are selected
upon analyzing the properties of material to be dyed.