SODIUM LIGNOSULFONATE   Sodium lignosulfonate(Sodium lignosulphonate) is yellow brown powder completely water soluble,is naturally anionic surfactant of high molecular polymer, rich in sulfo and carboxyl group and has better water-solubility, surf-activity and dispersion capacity.Could be used for construction, ceramics, mineral powder, chemical industry, textile industry (leather), metallurgical industry, petroleum industry, fire-retardantmaterials, rubber vulcanization, organic polymerization ,also could used as animal feed additives due to its antimicrobial and preservative properties.