Trisodium phosphate CAS No.7601-54-9
Pharmaceutical Materials 2025-03-20
CAS No.7601-54-9
Name
trisodium phosphate anhydrous
Synonyms
TSP
TSPA
ATSP
TSPC
oakite
dri-tri
antisal4
nutrifosstp
Sodium phosphate
trisodium phosphate
Tri-Sodium Phosphate
TRI-SODIUM ORTHOPHOSPHATE
phosphoric acid, sodium salt
trisodium phosphate anhydrous
| Attribute | Details |
|---|---|
| Name | Trisodium Phosphate |
| CAS Number | 7601-54-9 |
| Molecular Formula | Na3PO4 (anhydrous); Na3PO4·12H2O (dodecahydrate) |
| Molecular Weight | 163.94 g/mol (anhydrous); 380.12 g/mol (dodecahydrate) |
| Synonyms | TSP; Sodium Phosphate; Sodium Orthophosphate; Trisodium Orthophosphate |
| Appearance | White crystalline powder or colorless to white crystals (anhydrous); White granular solid (dodecahydrate) |
| Physical Properties | |
| – Density | 2.536 g/cm³ (anhydrous) |
| – Melting Point | 73.3-76.7°C (anhydrous); 73.4°C (dodecahydrate) |
| – Boiling Point | 158°C at 760 mmHg (anhydrous) |
| – Solubility | Soluble in water; insoluble in ethanol and carbon disulfide |
| pH | Aqueous solutions are alkaline |
| Stability | Hygroscopic; may form hard cakes if exposed to moisture |
| Storage Conditions | Store in a cool, dry, well-ventilated area away from food products; keep containers tightly closed |
| Applications | Used as a water softener, boiler scale inhibitor, metal antirust agent, and sugar purification agent; also used in papermaking, textile printing and dyeing, metallurgy, and food processing |
| Safety Information | May cause skin and eye irritation; appropriate safety measures and protective equipment should be used when handling |
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