Tetrasodium pyrophosphate (TSPP) is a white crystalline inorganic compound with the chemical formula Na₄P₂O₇. It functions as a sequestrant by chelating metal ions, maintains pH control as a buffering agent, stabilizes emulsions, disperses particles in suspension, and enhances detergent efficacy as a builder.
Applications include food additives, water treatment systems, ceramic manufacturing, and industrial cleaning products. Readily soluble in water. Typical purity grades available for industrial and commercial use.