Shramik Chemicals offers Water Soluble Acid Scarlet 3R Dyes. Shramik Chemicals is the supplier of acid dyes and direct dyes. Water Soluble Acid Scarlet 3R Dyes is used for dying & printing of wool, nylon & silk, in ink, paper, and leather, plastic & wood stains. Water Soluble Acid Scarlet 3R Dyes is available with red color which turns red on addition of conc H2SO4 With violet color on dilution turn reddish orange. The chemical name of this dye is 7 - hydroxy -8 - [[4- sulpho - naphthalene - 1] azo] - 1, 3 - naphthalene disulphonic acid, trisodium.