Tri Sodium Phosphate

Tri Sodium Phosphate

Trisodium phosphate (TSP) is a cleaning agent, lubricant, food additive, stain remover and degreaser. It is a white, granular or crystalline solid, highly soluble in water producing an alkaline solution. The item of commerce is often partially hydrated and may range from anhydrous trisodium phosphate, Na3PO4, to the dodecahydrate, Na3PO4·12H2O. Most often found in white powder form, it can also be called trisodium orthophosphate or simply sodium phosphate. Trisodium phosphate was at one time extensively used in formulations for a wide variety of consumer grade soaps and detergents, but ecological problems have largely ended that practice, at least in the western world.

Uses:
  • TSP is used as an ingredient in fluxes designed to deoxygenate nonferrous metals for casting.
  • TSP can be used in ceramic production to lower the flow point of glazes.
  • The major use for tri sodium phosphate is in cleaning agents.
  • The pH of a 1% solution is 12, and the solution is sufficiently alkaline to saponify grease and oils.
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