| Melting point |
315 °C (subl.)(lit.) |
| Boiling point |
684.9 °C(lit.) |
| Density |
4.81 g/mL at 25 °C(lit.) |
| vapor pressure |
1 mm Hg ( 157 °C) |
| refractive index |
nD20 <1.76 |
| Flash point |
315°C |
| storage temp. |
Store below +30°C. |
| solubility |
H2O: soluble |
| form |
powder |
| color |
white |
| Specific Gravity |
3.95 |
| PH |
2 (10g/l, H2O, 20℃) |
| Water Solubility |
38.4 g/100 mL (14 ºC) |
| Sublimation |
315 ºC |
| Merck |
14,8434 |
| crystal system |
square |
| Space group |
P42/mbc |
| Lattice constant |
| a/nm | b/nm | c/nm | α/o | β/o | γ/o | V/nm3 | | 0.83622 | 0.83622 | 0.50612 | 90 | 90 | 90 | 0.3539 |
|
| Exposure limits |
ACGIH: TWA 0.2 mg/m3
NIOSH: IDLH 1 mg/m3; TWA 0.2 mg/m3 |
| Stability |
Stable. Incompatible with organic materials, strong acids, ammonia, nitric acid, halogen acids. Protect from moisture. |
| InChI |
1S/O2Se/c1-3-2 |
| InChIKey |
JPJALAQPGMAKDF-UHFFFAOYSA-N |
| SMILES |
O=[Se]=O |
| CAS DataBase Reference |
7446-08-4(CAS DataBase Reference) |
| NIST Chemistry Reference |
Selenium dioxide(7446-08-4) |
| EPA Substance Registry System |
Selenium dioxide (7446-08-4) |
