1. Appearance and properties: odorless, tasteless white powder or colorless crystals. 

2. Relative density: 2.70 - 2.95 

3. Relative vapor density: Not available 

4. Melting Point(℃): 825 (decomposition) 

5. Boiling Point(℃): Not available 

6. Concentration: Pure 

7. Vapor pressure: Not available 

8. Solubility: insoluble in water, soluble in acid. 

9. Heat of combustion (kJ / mol): meaningless 

10. Critical temperature (℃): meaningless 

11. Critical pressure (MPa): meaningless