71950

Sodium selenite

anhydrous, ≥90.0% (RT)

• Synonym(s): Selenious acid disodium salt
• Linear Formula: Na₂SeO₃
• CAS Number: 10102-18-8
• Molecular Weight: 172.94
• EC Number: 233-267-9
• MDL number: MFCD00003489
• UNSPSC Code: 12352302
• PubChem Substance ID: 329763654
• NACRES: NA.22

Properties

• Quality Level: 200
• assay: ≥90.0% (RT)
• form: powder
• loss: ≤0.5% loss on drying, 200 °C
• mp: >350 °C (lit.)
• SMILES string: [Na+].[Na+].[O-][Se]([O-])=O
• InChI: 1S/2Na.H2O3Se/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2
• InChI key: BVTBRVFYZUCAKH-UHFFFAOYSA-L

Description

Application

Sodium selenite can be used:

• In dehydrogenation of benzoins to benzils and, flavanones to flavones under thermal and microwave conditions.
• As a catalyst along with cysteine or glutathione in the reductive debromination of vic-dibromides to alkenes.
• To prepare bis(methylmercuric) selenide (BMS) by reacting with methylmercuric chloride and reduced glutathione or cysteine.

Sodium selenite is a common source of selenium in the synthesis of zinc selenide (ZnSe). It is used as a key precursor in the synthesis of bismuth selenide nanocomposites, nickel cobalt selenides, selenium nanobelts and t-selenium nanotubes.

Safety Information

• pictograms: GHS06,GHS09
• signalword: Danger
• hcodes: H300 + H330,H315,H317,H319,H411
• pcodes: P260 - P273 - P280 - P302 + P352 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 2 Inhalation - Acute Tox. 2 Oral - Aquatic Chronic 2 - Eye Irrit. 2 - Skin Irrit. 2 - Skin Sens. 1
• supp_hazards: EUH031
• Storage Class: 6.1B - Non-combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
• wgk_germany: WGK 2
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges