Description
Sodium tripolyphosphate (STPP) is a versatile inorganic phosphate salt valued for its strong sequestering, deflocculating and buffering properties. It binds calcium and magnesium ions in hard water, preventing them from interfering with surfactants, and provides an alkaline buffering environment that boosts cleaning efficiency in detergent formulations.
In automatic dishwasher and laundry detergents, STPP acts as a key builder that enhances soil removal, suspends dispersed particles and prevents redeposition, leading to bright, residue-free washing results. Beyond detergents, it serves as a dispersant and deflocculant in ceramic and clay slurries, reducing viscosity and improving the flow and uniformity of glazes and bodies.
STPP also finds applications as a water-treatment and scale-control agent, a tanning auxiliary, and, in food-grade form, as a texture-improving sequestrant and moisture-retention aid in processed foods. The product is manufactured under controlled conditions to ensure consistent chain-length distribution, sodium content and low heavy-metal levels.
We supply STPP in food-grade and industrial grades, both as free-flowing white powder or granules, with strict control of pH, purity and insoluble matter. Each batch is accompanied by a certificate of analysis, and our technical staff can advise on the appropriate grade and dosage for detergents, ceramics, water treatment and food processing.
With stable supply, uniform quality and reliable logistics, STPP continues to be a dependable workhorse chemical across multiple industries, supporting formulators who need consistent raw materials for cost-sensitive and quality-critical applications alike.