Selenium dioxide
ALDRICH/204315 - 99.999% trace metals basis
Synonym: NSC 56753; Selenium oxide
CAS Number: 7446-08-4
Empirical Formula (Hill Notation): O2Se
Molecular Weight: 110.96
EC Number: 231-194-7
MDL Number: MFCD00003562
Linear Formula: SeO2
Product Type: Chemical
| assay | 99.999% trace metals basis |
| form | solid |
| InChI | 1S/O2Se/c1-3-2 |
| InChI key | JPJALAQPGMAKDF-UHFFFAOYSA |
| mp | 315 °C (subl.) (lit.) |
| Quality Level | 200 ![]() |
| SMILES string | O=[Se]=O |
| vapor pressure | 1 mmHg ( 157 °C) |
| Application: | Mild oxidizing reagent for allylic olefins and acetylenes. Conversion of 1,3-diketones to 1,2,3-triones. |
| Packaging: | 10, 50 g in glass bottle |
| Symbol | ![]() ![]() GHS06,GHS08,GHS09 |
| Signal word | Danger |
| Hazard statements | H301 + H331 - H373 - H410 |
| Precautionary statements | P273 - P301 + P310 + P330 - P304 + P340 + P311 - P314 |
| Hazard Codes | T,N |
| Risk Statements | 23/25-33-50/53 |
| Safety Statements | 20/21-28-45-60-61 |
| RIDADR | UN 3283 6.1 / PGIII |
| WGK Germany | WGK 2 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | 99.999% trace metals basis |
| mp | 315 °C (subl.) (lit.) |
| UNSPSC | 12352303 |




