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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

Key Documents

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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

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

Poisonous substance

pdsc

Class I Designated Chemical Substances

prtr

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified

71950-BULK: + 71950-RSAMPLE: + 71950-500G:4548173307084 + 71950-100G:4548173307077 + 71950-VAR:

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Certificates of Analysis (COA)

Lot/Batch Number
BCCN6155
BCCL5458
BCCJ4772
BCCJ4773
BCCG3610

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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)
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)
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)
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