Sodium Tripolyphosphate Alternative names: STPP, E451(i)

Description

Sodium Tripolyphosphate (STPP, sometimes STP or sodium triphosphate), with formula Na5P3O10, is a polyphosphate of sodium. It is the sodium salt of triphosphoric acid. Sodium Tripolyphosphate is a solid inorganic compound used in a large variety of household cleaning products, mainly as a builder, but also in human foodstuffs, animal feeds, industrial cleaning processes and ceramics manufacture. STPP is widely used in regular and compact laundry detergents and automatic dishwashing detergents (in powder, liquid, gel and/or tablet form), toilet cleaners, and surface cleaners. It also provides a number of chemical functions including: sequestration of "water hardness", enabling surfactants to function effectively; pH buffering; dirt emulsification and prevention of deposition; hydrolysis of grease; and dissolving-dispersing dirt particles.

STPP can be offered in either low density form which is granular, mid density which is medium granular and high density which is a powder. Norkem offer both Technical and Food Grades of STPP.

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Individuals receiving the information must exercise their independent judgment in determining its appropriateness for a particular purpose