
Cesium sulfate is an inorganic sulfate compound with the chemical formula Cs₂SO₄ and a molecular weight of 361.87. It forms colorless or white orthorhombic/hexagonal prisms, is highly soluble in water but practically insoluble in organic solvents, and is hygroscopic. It serves as an important analytical reagent, biological separation medium, and catalyst promoter, and is widely used in biochemistry, analytical chemistry, industrial catalysis, and other fields.
| Item | Specification |
| Melting point | 1019°C (lit.) |
| Boiling point | 1900°C |
| Density | 4.243 g/mL at 25°C (lit.) |
| Flash point | N/A |
| Vapor pressure | N/A |
| Refractive Index | 1.557 |
| PH | 5.8–6.8 |
| Solubility | Solubility at 20°C is 179 g/100 mL water; practically insoluble in organic solvents |
| Hygroscopicity | Hygroscopic |
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