Sodium triphosphate is the sodium salt of the polyphosphate, which is the conjugate base of tri-phosphoric acid. STPP is a colourless salt, which exists as anhydrous and also as hexahydrate.
Its wide spread use is well known in detergent industries. The most common method of preparation is by reacting Mono Sodium and Disodium Phosphates.
Sodium Tri polyphosphate forms a key component of commercial detergents and is used widely for that purpose
STPP serves as a food preservative, used to preserve meat, poultry, animal feeds and seafood
STPP is used in ceramics to increase viscosity of the glazes.
Other uses of STPP are leather tanning, in flame retardants, paper, anticorrosion pigments, textile, rubber manufacture, etc.
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