Selenium dioxide
ALDRICH/200107 - ≥99.9% 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
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 200107-5G
| assay | ≥99.9% trace metals basis |
| form | solid |
| InChI | 1S/O2Se/c1-3-2 |
| InChI key | JPJALAQPGMAKDF-UHFFFAOYSA |
| mp | 315 °C (subl.) (lit.) |
| Quality Level | 200  |
| reaction suitability | reagent type: oxidant |
| SMILES string | O=[Se]=O |
| vapor pressure | 1 mmHg ( 157 °C) |
| Application: | Selenium dioxide (SeO2) can be used as: • An oxidizing agent to introduce carbonyl functional groups at activated carbon. • A catalyst in the allylic hydroxylation reactions. • An oxidant in the synthesis of amides by oxidative amidation of aldehydes with amines. • A catalyst to synthesize di and trioxidized bicyclic cyclopentenones by reacting with Pauson-Khand reaction (PKR) products. • A catalyst along with iodine (I2) to prepare mono and bis-sulfenylindoles by treating indoles with diaryl disulfides via C-H sulfenylation. • A catalyst to synthesize alkyl and aryl nitriles from the corresponding aldehydes via the formation of aldoxime. • A selenium precursor to synthesize FeSe nanostructures via electrochemical deposition method. It can also be used as a versatile reagent for allylic oxidation and oxidative-elimination reactions. |
| Packaging: | 5, 25 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 | ≥99.9% trace metals basis |
| mp | 315 °C (subl.) (lit.) |
| UNSPSC | 12352303 |