Trisodium 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.
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Molecular Formula:
Na3PO4
Uses:
Trisodium phosphate was at one time extensively used in formulations for a variety of consumer-grade soaps and detergents, and the most common use for trisodium phosphate has been in cleaning agents.In the U.S., trisodium phosphate is an approved flux for use in hard soldering joints in medical-grade copper plumbing. It is also approved as a food additive commonly used as acidity regulators.
Tech Grade:
| ITEMS | SPECIFICATIONS |
| Visible Apperance | White Crystal Powder |
| Purity, min % | 98 |
| Fumaric Acid, max % | 1.0 |
| Insoluble matter in water, max % | 0.1 |
| SO4, max % | 0.5 |
| Cl, max % | 0.3 |
| Na2O, max % | 16-19 |
Food Grade:
| ITEMS | GB25565-2010 |
| Anhydrous Na3PO4 (in dry basis) w/% ≥ | - |
| Monohydrate Na3PO4·H2O w/% ≥ | 97.0 |
| Dodecahydrate Na3PO4·12H2O w/% ≥ | - |
| Heavy Metals (Pb), mg/kg ≤ | 10 |
| Pb mg/kg, ≤ | 4 |
| Fluorides(F), mg/kg, ≤ | 50 |
| Insoluble in water, w/% ≤ | 0.2 |
| pH value (10g/L) | 11.5-12.5 |
| As, mg/kg ≤ | 3 |
| Loss on ignition, w/% (Na3PO4) ≤ | 2.0 |
| Loss on ignition, w/% (Na3PO4·H2O) ≤ | 8-11 |
| Loss on ignition, w/% (Na3PO4·12H2O) ≤ | 45-57 |
