71950
Sodium selenite
anhydrous, ≥90.0% (RT)
Synonym(s):
Selenious acid disodium salt
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About This Item
Linear Formula:
Na2SeO3
CAS Number:
Molecular Weight:
172.94
NACRES:
NA.22
PubChem Substance ID:
UNSPSC Code:
12352302
EC Number:
233-267-9
MDL number:
Assay:
≥90.0% (RT)
Form:
powder
Quality Level
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
Application
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.
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.
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Danger
Hazard Classifications
Acute Tox. 2 Inhalation - Acute Tox. 2 Oral - Aquatic Chronic 2 - Eye Irrit. 2 - Skin Irrit. 2 - Skin Sens. 1
supp_hazards
Storage Class
6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
wgk
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
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Cellulose-directed growth of selenium nanobelts in solution.
Lu Q, et al.
Chemistry of Materials, 18(1) (2006)
Sodium selenite-dimethylsulfoxide: a highly efficient reagent for dehydrogenation
Lamba M and Makrandi JK
J. Chem. Res. (M), 2008(4), 225-226 (2008)
Multifunctional bismuth selenide nanocomposites for antitumor thermo-chemotherapy and imaging.
Li Z, et al.
ACS Nano, 10(1), 984-997 (2015)