acid Orange Dye Manufactured and Supplied By Us is Water-soluble, Employed Mostly in the Form of Sodium Salts of the Sulfonic or Carboxylic Acids. this Dye is Anionic Which Attach Strongly to Cationic Groups in the Fiber Directly. Acid Orange Dyes Can Be Applied to all Kind of Natural Fibers like Wool, Cotton and Silk as Well as to Synthetics like Polyesters, Acrylic and Rayon. But, They are Not Substantive to Cellulosic Fibers. Acid Orange Dyes are also Used in Paints, Inks, Plastics and Leather. c.i. No 15510