| Melting point: |
23.8° |
| Boiling point: |
bp 173.1° in nitrogen atm |
| Density |
d421 2.135 |
| solubility |
reacts with H2O |
| form |
colorless monoclinic crystals or liquid |
| color |
colorless monoclinic crystals, crystalline or
liquid |
| Water Solubility |
slowly forms H3PO3 in cold H2O; reacts violently in hot H2O forming red P, PH3, and H3PO4 [MER06] |
| crystal system |
Monoclinic |
| Space group |
P21/m |
| Lattice constant |
| a/nm | b/nm | c/nm | α/o | β/o | γ/o | V/nm3 | | 0.643 | 0.7887 | 0.6812 | 90 | 106.01 | 90 | 0.3321 |
|
| EPA Substance Registry System |
Phosphorus trioxide (1314-24-5) |