Sodium tripolyphosphate (STPP)

White, granular, water-soluble crystalline compound.

Sodium tripolyphosphate is a white, granular, water-soluble crystalline compound. It has a high melting point and excellent thermal stability. With strong chelating properties, it forms complexes with metal ions. It is commonly used as a detergent builder, water softener, and dispersing agent in various industries.

Energy Sector

Sodium tripolyphosphate (STPP) is utilized in the energy sector for various purposes. It is commonly employed as a deflocculant and dispersing agent in drilling muds and cement slurries, helping to control viscosity and improve fluid stability. STPP also acts as a water softener and scale inhibitor in water-based drilling fluids, preventing the formation of scale deposits that can hinder drilling operations. Furthermore, it finds application in well stimulation treatments to control clay swelling and improve fluid flow. Its multifunctional properties make STPP a valuable additive in oil and gas operations for optimizing drilling and production processes.

Water Treatment

Sodium tripolyphosphate (STPP) has several applications in water treatment processes. It is commonly used as a water softener and scale inhibitor, effectively preventing the precipitation of calcium and magnesium ions that cause hardness and scale formation. STPP can also act as a dispersing agent, helping to prevent the agglomeration of suspended particles and improving the efficiency of filtration. Additionally, it finds use as a corrosion inhibitor, protecting metal surfaces from corrosion in water systems. The chelating properties of STPP make it effective in complexing metal ions, enhancing the overall performance of water treatment processes.

CAS No.: 7758-29-4


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