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229857

Sigma-Aldrich

Selenous acid

99.999% trace metals basis

Synonyme(s) :

Selenious acid

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About This Item

Formule linéaire :
H2SeO3
Numéro CAS:
7783-00-8
Poids moléculaire :
128.97
Numéro CE :
231-974-7
Numéro MDL:
MFCD00011331
Code UNSPSC :
12352300
ID de substance PubChem :
24853753
Nomenclature NACRES :
NA.23

Pureté

99.999% trace metals basis

Forme

solid

Pf

70 °C (dec.) (lit.)

Densité

3.004 g/mL at 25 °C (lit.)

Chaîne SMILES 

O[Se](O)=O

InChI

1S/H2O3Se/c1-4(2)3/h(H2,1,2,3)

Clé InChI

MCAHWIHFGHIESP-UHFFFAOYSA-N

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Catégories apparentées

Description générale

Selenous acid is a dibasic acid. It is the oxoacid of selenium and can be formed by adding selenium dioxide gas to water. Selenous acid shows analogy to sulfurous acid. As a crystalline solid, the molecules are arranged in a pyramid and in a solution it behaves as a diprotic acid.

Application

  • Selenic acid etching assisted vacancy engineering for designing highly active electrocatalysts toward the oxygen evolution reaction: Examination of the use of selenous acid in vacancy engineering for electrocatalysts (Zhang et al., 2021).
  • Europium (III) Catalysis for Reduction of Thionine Dye by Selenous Acid in Aqueous Sulfuric Acid Solutions: Study on the kinetics and mechanism of selenium(IV) reduction in aqueous sulfuric acid solutions (Fawzy, 2016).

Conditionnement

Packaged in High-Density Polyethylene (HDPE)

Pictogrammes

Skull and crossbonesHealth hazardEnvironment
GHS06,GHS08,GHS09

Mention d'avertissement

Danger

Mentions de danger

H301 + H331,H373,H410

Classification des risques

Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - STOT RE 2

Code de la classe de stockage

6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges

Certificats d'analyse (COA)

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Consulter la Bibliothèque de documents

Ropp RC et al.
Encyclopedia of the Alkaline Earth Compounds null
Thomas G Back et al.
The Journal of organic chemistry, 70(23), 9230-9236 (2005-11-05)
[Reaction: see text]. Several novel organoselenium and tellurium compounds were prepared and evaluated as mimetics of the selenoenzyme glutathione peroxidase, which protects cells from oxidative stress by reducing harmful peroxides with the thiol glutathione. The compounds were tested for catalytic
H Chen et al.
International journal of food microbiology, 18(2), 151-159 (1993-04-01)
Five Salmonella serotypes recovering from heat injury exhibited different kinetics of resuscitation and growth. Exponential growth was reached before full resuscitation. Fully resuscitated cells and uninjured cells at low cell densities exhibited sensitivity when transferred from non-selective media to selective
Thomas G Back et al.
Journal of the American Chemical Society, 124(41), 12104-12105 (2002-10-10)
1,2-Oxaselenolane Se-oxide is a novel cyclic seleninate ester that functions as a remarkably efficient glutathione peroxidase mimetic by catalyzing the reduction of tert-butyl hydroperoxide to tert-butyl alcohol in the presence of benzyl thiol. The seleninate ester can be conveniently generated
Y Kayanoki et al.
Journal of biochemistry, 119(4), 817-822 (1996-04-01)
Selenium-dependent glutathione peroxidase (GPx) plays a protective role in oxidative stress-induced apoptosis. In this study, we demonstrated that MDBK cells, a bovine renal epithelial cell line, exhibited internucleosomal DNA fragmentation characteristic of apoptotic cell death under selenium-deficient conditions with lower
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