Tri Sodium Phosphate
Trisodium phosphate is a sodium phosphate. Trisodium phosphate (TSP) is the inorganic compound with the chemical formula Na3PO4. It is a white, granular or crystalline solid, highly soluble in water, producing an alkaline solution. TSP is used as a cleaning agent, builder, lubricant, food additive, stain remover, and degreaser. The item of commerce is often partially hydrated and may range from anhydrous Na3PO4 to the dodecahydrate Na3PO4 • 12H2O. Most often found in white powder form, it can also be called trisodium orthophosphate or simply sodium phosphate.
- Synonyms
- E 339, Phosphoric Acid Trisodium Salt, Sodium Phosphate Tribasic, Trisodium Orthophosphate, Trisodium Phosphate, Trisodium Phosphate Anhydrous TSP, TSP Anhydrous
- Chemical Formula
- Anhydrous: Na3PO4; Hydrated: Na3PO4nH2O (n = 1/2, 1, 6, 8, (...)
- CAS Number
- 7601-54-9
Characteristics
- Molar Weight
- 163.941 g/mol
- Melting Point
- 1583 °C
- Boiling Point
- 100 °C
- Density
- 2.536 g/cm3 (17.5 °C, anhydrous) 1.62 g/cm3 (20 °C, dodecahydrate)
- Forms
- Crystals (large), Powder (dry), White, Pellets
Uses and Applications
Key applications
- Buffer agent
- Personal care
- Cosmetic products