Lignosulfonates, or sulfonated lignin, (CAS number 8062-15-5) are byproducts from the production of wood pulp using sulfite pulping.The largest use for lignosulfonates is as plasticizers in concrete production, where they help to make concrete with less water (giving stronger concrete) while keeping up the facility of the concrete to flow. The ability of lignosulfonates to reduce the viscosity of mineral slurries is used to advantage in oil drilling mud, where it replaced tannic acids from quebracho (a tropical tree). INDUSTRIAL APPLICATIONS:*Concrete additives, cement mortar, light aggregate plaster.* Leather Industry, dyes and pigments.* Carbon black* Oil drilling muds* Particleboard, plywood* Binding material for sand and core sand mixtures in foundry