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Chemical DictionaryCAS: 7758-29-4
Sodium Tripolyphosphate (STPP)
SODIUM TRIPOLYPHOSPHATE=STPP=Pentasodium triphosphate
Sodium Tripolyphosphate (STPP)
STPP is the sodium salt of triphosphoric acid. It is an inorganic solid in the form of a white, odorless powder or granule that dissolves very well in water.
Uses and Benefits
•Binds ions in hard water through chelation (trapping), preventing their precipitation and increasing the cleaning power of surfactants in detergents.
Technical Identity
IUPAC / Trade NameSodium Tripolyphosphate (STPP)
Chemical FormulaNa5P3O10
CAS Number7758-29-4
EC Number231-838-7
Molecular Weight367.86
Industry CategoryGeneral Industrial
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