Check the listing for details. Sodium Tripolyphosphate Light (STPP), food grade, White Granular 50 LB. Condition: New. Listed at 199.00 USD. Food Grade Whole Bag of STPP 50 lbs, Sodium Tripolyphosphate Sodium tripolyphosphate (STPP) is a chemical compound that is commonly used in a variety of industrial and consumer products. Some of the main functions and benefits of using STPP include:ApplicationsWater softening: STPP is used as a water softener in detergents and cleaning products. It helps to remove calcium and magnesium ions that can cause hard water, resulting in more effective cleaning.Emulsification: STPP is used as an emulsifier in food products, helping to mix oil and water-based ingredients together. It is commonly used in processed meats, seafood, and cheese products.Preservative: STPP is used as a preservative in some processed foods, helping to prevent the growth of bacteria and mold.Texturizer: STPP is used as a texturizer in some processed foods, helping to improve the texture and consistency of the finished product.Cleaning agent: STPP is used as a cleaning agent in industrial processes, helping to remove dirt and grime from surfaces.Fire retardant: STPP is used as a fire retardant in some industrial processes, helping to slow down or prevent the spread of fire.Waste treatment: STPP is used in waste water treatment plants, to help remove impurities and contaminants.