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Merck

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:
10102-18-8
Molecular Weight:
172.94
NACRES:
NA.22
PubChem Substance ID:
329763654
UNSPSC Code:
12352302
EC Number:
233-267-9
MDL number:
MFCD00003489
assay:
≥90.0% (RT)
form:
powder

Product Name

Sodium selenite, anhydrous, ≥90.0% (RT)

InChI key

BVTBRVFYZUCAKH-UHFFFAOYSA-L

InChI

1S/2Na.H2O3Se/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2

SMILES string

[Na+].[Na+].[O-][Se]([O-])=O

assay

≥90.0% (RT)

form

powder

loss

≤0.5% loss on drying, 200 °C

mp

>350 °C (lit.)

Quality Level

200

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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.

pictograms

Skull and crossbonesEnvironment
GHS06,GHS09

signalword

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

EUH031

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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Certificates of Analysis (COA)

Lot/Batch Number
BCCN6155
BCCL5458
BCCJ4772
BCCJ4773
BCCG3610

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New method for bis (methylmercuric) selenide synthesis from methylmercuric chloride, sodium selenite and reduced glutathione
Naganuma A and Imura N
Chemosphere, 10(4), 441-443 (1981)
Multifunctional bismuth selenide nanocomposites for antitumor thermo-chemotherapy and imaging.
Li Z, et al.
ACS Nano, 10(1), 984-997 (2015)
Bimetallic nickel cobalt selenides: a new kind of electroactive material for high-power energy storage.
Chen H, et al.
Journal of Material Chemistry A, 3(47), 23653-23659 (2015)
Cellulose-directed growth of selenium nanobelts in solution.
Lu Q, et al.
Chemistry of Materials, 18(1) (2006)
Nucleation- dissolution- recrystallization: a new growth mechanism for t-selenium Nanotubes.
Xi G, et al.
Crystal Growth & Design, 6(2), 577-582 (2006)
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