Sodium tripolyphosphate, chemical structure: this product is a kind of amorphous water-soluble linear polyphosphate, terminated with Na₂PO₄ at both ends, chemical formula Na₅P₃O₁₀, relative molecular weight 367.86. It is often used in detergent, ceramic and water treatment industries as PH regulator and metal chelating agent.

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STPP, or Sodium Tripolyphosphate, is a highly versatile chemical compound.

STPP is widely recognized for its excellent sequestering ability. It can effectively bind to metal ions in water, preventing the formation of scale and deposits. This property makes it a crucial ingredient in many detergents and cleaning products. By chelating the metal ions, it enhances the cleaning efficiency of detergents, ensuring better removal of dirt, grease, and stains.

In the food industry, STPP also plays an important role. It can be used as a food additive, for example, in the processing of meat products. It helps to improve the water - holding capacity of meat, making the meat juicier and more tender. It also contributes to the preservation of food by inhibiting the growth of certain microorganisms.

Moreover, in industrial applications, STPP is used in water treatment processes. It helps to soften water by preventing the precipitation of calcium and magnesium salts. This is essential for many industrial operations where hard water can cause problems such as clogging of pipes and reduced efficiency of heat exchangers. Overall, STPP is a valuable chemical with diverse applications across different industries.