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During a recent attempt to produce solid forms of water‐soluble, sulphonated reactive dye samples with low electrolyte content, it was found that salting‐out of such dyes with sodium thiocyanate dihydrate and subsequent washing with acetone gave a product with very low content of inorganic salts. A readily soluble solid of high tinctorial strength was produced.
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A. R. Barnes (1996) studied this question.
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