Trisodium Phosphate


HS CODE 28353100

Trisodium phosphate is the inorganic compound with the chemical formula Na?PO?. 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.

Formula: Na?PO?
Molar mass: 163.94 g/mol
IUPAC ID: Trisodium phosphate
Melting point: 1,583 °C
Density: 1.62 g/cm³
Solubility: insoluble in ethanol, CS2
Crystal structure: Trigonal

Tri Sodium Phosphate (Na3PO4 : 12H2O) IS 573 : 1992 (P2O5 : 17.50 % min)

Major Applications

Cleaning agent in power plant, refineries,

steel plants, fertilizer plants
Water treatment
Textile processing

TSP has several agronomic advantages that made it such a popular P source for many years. It has the highest P content of dry fertilizers that don't contain nitrogen (N). Over 90 percent of the total P in TSP is water soluble, so it becomes rapidly available for plant uptake.