Sodium Phosphate (Na3PO4)-Powder

Characteristic

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. 

Chemical formula:Na₃PO₄

Density:2.536 g/cm³ (17.5 °C, anhydrous)  1.62 g/cm³ (20 °C, dodecahydrate)

Melting point: 1,583 °C (2,881 °F; 1,856 K) (anhydrous)

                         73.4 °C (164.1 °F; 346.5 K) (dodecahydrate)

Boiling point: 100 °C (212 °F; 373 K) (dodecahydrate) decomposes

Solubility in water: anhydrous:5.4 g/100 mL (0 °C)  12 g/100 mL (20 °C)  14.5 g/100 mL (25 °C)  23.3 g/100 mL (40 °C)  94.6 g/100 mL (100 °C)

                                 dodecahydrate: 28.3 g/100 mL (20 °C)  Solubility insoluble in ethanol, CS2

Basicity (pKb):2.23

Crystal structure:Trigonal

Application

TSP is used as a cleaning agent, builder, lubricant, food additive, stain remover, and degreaser.