Application of 4-nitrotoluene-2-sulfonic acid_Kain Industrial Additive

Overview[1] 4-Nitrotoluene-2-sulfonic acid autocondensation dyes can be divided into dyes with colors ranging from yellow to red according to the degree of condensation. Among them, the most widely used direct yellow 11 dye is a strong yellow dye, especially suitable for Dyeing of fibers, leather, etc. As described in U.S. Patent 4310331, the production process…