The Use of Sodium Thiocyanate for the Salting-out of Water-soluble Dyes

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 dehydrate 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