200107

Selendioxid

≥99.9% trace metals basis

• Synonym(e): NSC 56753, Selen(IV)-oxid
• Lineare Formel: SeO₂
• CAS-Nummer: 7446-08-4
• Molekulargewicht: 110.96
• EG-Nummer: 231-194-7
• MDL-Nummer: MFCD00003562
• UNSPSC-Code: 12352303
• PubChem Substanz-ID: 24851959
• NACRES: NA.22

Eigenschaften

• Dampfdruck: 1 mmHg ( 157 °C)
• Assay: ≥99.9% trace metals basis
• Form: solid
• Eignung der Reaktion: reagent type: oxidant
• mp (Schmelzpunkt): 315 °C (subl.) (lit.)
• SMILES String: O=[Se]=O
• InChI: 1S/O2Se/c1-3-2
• InChIKey: JPJALAQPGMAKDF-UHFFFAOYSA-N

Beschreibung

Anwendung

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.

Sicherheitshinweise

• Piktogramme: GHS06,GHS08,GHS09
• Signalwort: Danger
• H-Sätze: H301 + H331,H373,H410
• P-Sätze: P260 - P264 - P273 - P301 + P310 - P304 + P340 + P311 - P314
• Gefahreneinstufungen: Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - STOT RE 2
• Lagerklassenschlüssel: 6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
• WGK: WGK 2
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable
• Persönliche Schutzausrüstung: Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges