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Sigma-Aldrich

Selenium dioxide

99.999% trace metals basis

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Synonym(s):
NSC 56753, Selenium oxide
Linear Formula:
SeO2
CAS Number:
7446-08-4
Molecular Weight:
110.96
EC Number:
231-194-7
MDL number:
MFCD00003562
UNSPSC Code:
12352303
PubChem Substance ID:
24852252
NACRES:
NA.23

vapor pressure

1 mmHg ( 157 °C)

assay

99.999% trace metals basis

form

solid

mp

315 °C (subl.) (lit.)

SMILES string

O=[Se]=O

InChI

1S/O2Se/c1-3-2

InChI key

JPJALAQPGMAKDF-UHFFFAOYSA-N

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Application

Mild oxidizing reagent for allylic olefins and acetylenes. Conversion of 1,3-diketones to 1,2,3-triones.

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Danger

Hazard Classifications

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

wgk_germany

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

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

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Asian Journal of Chemistry, 19, 4107-4107 (2007)
Tetrahedron Letters, 34, 2979-2979 (1993)
Erik A A Wallén et al.
Organic letters, 9(3), 389-391 (2007-01-26)
[reaction: see text] An efficient synthetic route to Cbz-protected 3-aminomethyl-2-aryl-8-bromo-6-chlorochromones has been developed. 3-Aryl-1-(3-bromo-5-chloro-2-hydroxyphenyl)-2-propen-1-one or 2-aryl-8-bromo-6-chlorochroman-4-one could be reacted under Mannich conditions yielding 2-aryl-8-bromo-6-chloro-3-methylenechroman-4-one, which was further converted to the target compound via an aza-Michael reaction followed by an SeO(2)
Mojtaba Shakibaie et al.
Pharmaceutical biology, 51(1), 58-63 (2012-10-06)
In the present investigation, acute and subacute toxicity of the biogenic Se nanoparticles (Se NPs) has been reported. To characterize the Se NPs produced by a bacterium species and to evaluate their toxicity and impact on clinical chemistry and hematological
Yu-Wei Chen et al.
Chemosphere, 74(8), 1079-1084 (2008-12-09)
The possible abiotic reduction of selenite to form elemental Se was studied under controlled conditions in the presence of ferrous iron. The reduction of selenite and formation of Se (0) was found to be a surface-mediated reaction by iron oxides.
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