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229857

Sigma-Aldrich

Selenous acid

99.999% trace metals basis

Synonym(s):
Selenious acid
Linear Formula:
H2SeO3
CAS Number:
Molecular Weight:
128.97
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23

Quality Level

assay

99.999% trace metals basis

form

solid

mp

70 °C (dec.) (lit.)

density

3.004 g/mL at 25 °C (lit.)

SMILES string

O[Se](O)=O

InChI

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

InChI key

MCAHWIHFGHIESP-UHFFFAOYSA-N

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General description

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.

Packaging

50, 500 g in glass bottle
Packaged in glass bottles

Other Notes

Tandem Mass Spectrometry data independently generated by Scripps Center for Metabolomics is available to view or download in PDF. 229857.pdf Tested metabolites are featured on Scripps Center for Metabolomics METLIN Metabolite Database. To learn more, visit sigma.com/metlin.

Signal Word

Danger

Hazard Statements

Hazard Classifications

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

Storage Class Code

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

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

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