Trisodium Phosphate CAS：7601-54-9
High Purity Crystal Form：This high-purity material features regular hexagonal crystal grains, appearing white or transparent under normal storage conditions.
Water Solubility Performance：It boasts favorable solubility in water: roughly 28 grams can dissolve into 100 mL of water at 20 degrees Celsius.
Strong Basic Property：When formulated into 0.1 mol/L aqueous solution, the liquid carries strong alkalinity with a pH value around 11.5.
Thermal & Hydration Stability：Its crystal framework and bound water will not decompose easily after prolonged heating, showing outstanding hydrate retention stability.
This chemical dissolves readily in water — 28 grams can fully dissolve in 100 mL water at 20°C. Its 0.1 mol/L aqueous solution exhibits strong basicity with a pH value of 11.5, and the substance cannot dissolve in alcohol solvents at all.
Parameters
| Core Performance Index | Index Details |
| Thermal & Density Character | Melting point 1340°C; density 2.536 g/cm³ (17.5°C); zero vapor pressure at 20°C |
| Dissolution Feature | Slightly soluble in water; fully insoluble in ethanol and carbon disulfide |
| Storage & Appearance | Store under inert gas at room temp; white odorless powder, strongly hygroscopic |
| Aqueous Alkalinity | pH 10.95 (1mM), 11.71 (10mM), 12.12 (100mM) water solution |
| Chemical Registration Info | CAS:7601-54-9, EPA name: Trisodium phosphate; complete molecular coding attached |
Safety Information
| Safety Core Items | Details |
| Hazard Label & Risk Codes | Hazard mark C,Xi; risk codes 34/36/37/38; safety operation codes 26/36/37/39/45/24/25 |
| Transport Dangerous Goods Info | UN3262, Class 8 corrosive goods, Packing Group III |
| Environmental & Fire Risk | WGK 1 (Germany water hazard grade); fire risk code F34 |
| Regulatory Inventory Certifications | RTECS: TC9490000; TSCA listed; Hazardous Substance No.7601-54-9 |
| Customs Commodity Code | HS tariff code: 28352910 |
| Toxicity Data | Rabbit skin LD50 value exceeds 300 mg/kg |
Trisodium phosphate (TSP) is an inorganic compound with versatile industrial applications, primarily functioning as an effective cleaning agent in industrial detergents and restroom floor cleaners. It also serves as a key component in metal surface treatment processes. Additional applications include water softening, boiler water treatment, paint removal, photographic development, leather tanning, paper manufacturing, and sugar clarification.
