Sigma-Aldrich 325473 Selenium dioxide reagent grade, powder, 98% 500 gr
Kategori
Marka
Stok Kodu
LB.SA.325473-500G
Kısa Bilgi
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
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Sigma-Aldrich 325473 Selenium dioxide reagent grade, powder, 98% 500 gr
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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
PubChem Substance ID: 24859512
NACRES: NA.22
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PROPERTIES
grade reagent grade
Quality Level 200
vapor pressure 1 mmHg ( 157 °C)
assay 98%
form powder
reaction suitability reagent type: oxidant
color off-white to pink
mp 315 °C (subl.) (lit.)
SMILES string O=[Se]=O InChI 1S/O2Se/c1-3-2
InChI key JPJALAQPGMAKDF-UHFFFAOYSA-N
DESCRIPTION
Application
Selenium dioxide (SeO2) is mainly used to oxidize the α-methylene carbon atoms adjacent to a double bond to form allylic hydroxy derivatives.[1] Other applications: SeO2 reacts with olefins in the presence of tert-butyl hydrogen peroxide to form allylic alcohols without the formation of rearrangement or dehydration by-products.[2] This reagent system is also useful for the oxidation reactions of acetylenic fatty esters.[1] SeO2 can be used for the oxidation of 1,3,5-cycloheptatriene to form tropone.[3] Piperidoindole systems on oxidation with SeO2 forms either 2-acyl- or 3-acyl-indoles or fully aromatic β-carbolines, depending on the starting material.[4] SeO2 reacts with chlorotrimethylsilane to form selenium oxychloride in situ, which is an effective chlorinating reagent for alcohols. This reagent is a better alternative to thionyl chloride and other chlorinating agents.[5]
Packaging
5, 100, 500 g in glass bottle
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