Sodium Tripolyphosphate Powder is a chemical that is frequently used to soak seafood to make it seem firmer and more shiny. It is also recognised as triphosphoric acid or pentasodium salt. The sodium version of the polyphosphate penta-anion, sodium tripolyphosphate, is an inorganic chemical. It is found in a variety of household and commercial goods, notably detergents. It is commonly found in conventional and compact laundry detergents, as well as automated dish washing detergents.