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Sodium lignosulfonic Acid Sodium Salt is sodium ligninsulfonate is a natural polymer, anionic surfactants. Has a strong dispersibility, suitable for the solid dispersion in the water medium. Due to the different molecular weight and functional groups have different degrees of dispersion, can be adsorbed on the surface of a variety of solid particles, can be metal ion exchange, but also because of its organizational structure of the existence of a variety of active groups, which can produce condensation or And hydrogen compounds with other compounds. In industry, Sodium Lignosulfonate is widely used as a dispersant and wetting agent. Dyeing industry used in the dispersant -NNO is sodium lignosulfonate as the main Raw Material compound.