SODIUM TRIPHOSHATE (STPP)
Sodium triphosphate (STPP) is a solid inorganic compound that was
historically used in a large variety of household cleaning
products, mainly as a builder.
As a builder, sodium triphosphate (STPP) sequestrates calcium and
magnesium ions. It is a soluble builder and forms soluble complexes
with hardness ions. As a pH buffering agent, STPP binds to
protons.