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211176

Sigma-Aldrich

Selenous acid

98%

Synonym(s):

Selenious acid

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10 G
389,00 kr
50 G
863,00 kr
250 G
2 620,00 kr

389,00 kr

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10 G
389,00 kr
50 G
863,00 kr
250 G
2 620,00 kr

About This Item

Linear Formula:
H2SeO3
CAS Number:
7783-00-8
Molecular Weight:
128.97
EC Number:
231-974-7
MDL number:
MFCD00011331
UNSPSC Code:
12352301
PubChem Substance ID:
24852658
NACRES:
NA.22

389,00 kr

Please contact Customer Service for Availability
Request a Bulk Order

Quality Level

200

Assay

98%

form

solid

mp

70  °C ((lit.))
70 °C (dec.) (lit.)

solubility

water: 50 mg/mL

density

3.004  g/mL at 25 °C ((lit.))
3.004 g/mL at 25 °C (lit.)

SMILES string

O[Se](O)=O
O[Se](O)=O

InChI

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

InChI key

MCAHWIHFGHIESP-UHFFFAOYSA-N
MCAHWIHFGHIESP-UHFFFAOYSA-N

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Application

Selenous acid can be used as a reagent to synthesize:
  • α-Ketoacectals by reacting with acetophenones and triethylorthoformate in the presence of boron trifluoride etherate as a catalyst[1].
  • 4-Formyl-7-methylcoumarin using 4,7-dimethylcoumarin in the presence of xylene as a solvent[2].
  • Selenium substituted quinoxaline derivatives from 2,3-dichloro quionoxaline.

Signal Word

Danger

Hazard Statements

H301 + H331,H373,H410

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

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Certificates of Analysis (COA)

Lot/Batch Number
STBK8898
STBK2145
STBJ7660
STBJ2502
STBH3328

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One-pot synthesis of alpha-ketoacetals from aryl methyl ketones in the presence of selenous acid catalyzed by boron trifluoride etherate
Kharkongor I, et al.
Tetrahedron Letters, 56, 4359-4362 (2015)
The synthesis of novel coumarin dyes and the study of their photoreaction properties
Wang T, et al.
Dyes and Pigments, 75, 104-110 (2007)
D Seidel et al.
Journal of clinical chemistry and clinical biochemistry. Zeitschrift fur klinische Chemie und klinische Biochemie, 16(7), 407-411 (1978-07-01)
A simple one-vial-method was developed for the quantitative determination of sphingomyelinase activity in human leukocytes and urine, using [14C-methyl] sphingomyelin. The measured activities of healthy control persons show a higher scatter in (n=50) urine (1.2 +/- 0.5 nmol/h . ml
Ropp RC et al.
Encyclopedia of the Alkaline Earth Compounds null
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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