Sodium trimetaphosphate (also STMP), with formula Na3P3O9, is a metaphosphate of sodium. It has the empirical formula NaPO3. It is the sodium salt of trimetaphosphoric acid.
It is a colourless solid that finds specialised applications in food and construction industries. STMP is prepared by heating sodium polyphosphate at a few hundred degrees.Although drawn with a particular resonance structure, the trianion has D3d symmetry.
Sodium Trimetaphosphate uses and applications include: Corrosionscale inhibitor, sequestrant for water treatment; preparation of food starch modified; buffer, chelating agent in cosmetics, pharmaceuticals
Suggested storage of Sodium Trimetaphosphate: Store in tightly closed containers in a cool, dry area
Industry Uses
Corrosion inhibitors and anti-scaling agents
Finishing agents
Plating agents and surface treating agents
Processing aids, not otherwise listed
Consumer Uses
Building/construction materials not covered elsewhere
Cleaning and furnishing care products
Metal products not covered elsewhere