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Principaux documents

200107

Sigma-Aldrich

Selenium dioxide

≥99.9% trace metals basis

Synonyme(s) :

NSC 56753, Selenium oxide

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About This Item

Formule linéaire :
SeO2
Numéro CAS:
Poids moléculaire :
110.96
Numéro CE :
Numéro MDL:
Code UNSPSC :
12352303
ID de substance PubChem :
Nomenclature NACRES :
NA.22
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Pression de vapeur

1 mmHg ( 157 °C)

Essai

≥99.9% trace metals basis

Forme

solid

Pertinence de la réaction

reagent type: oxidant

Pf

315 °C (subl.) (lit.)

Chaîne SMILES 

O=[Se]=O

InChI

1S/O2Se/c1-3-2

Clé InChI

JPJALAQPGMAKDF-UHFFFAOYSA-N

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Application

Selenium dioxide (SeO2) can be used as:
  • An oxidizing agent to introduce carbonyl functional groups at activated carbon.[1]
  • A catalyst in the allylic hydroxylation reactions.[1]
  • An oxidant in the synthesis of amides by oxidative amidation of aldehydes with amines.[2]
  • A catalyst to synthesize di and trioxidized bicyclic cyclopentenones by reacting with Pauson-Khand reaction (PKR) products.[3]
  • A catalyst along with iodine (I2) to prepare mono and bis-sulfenylindoles by treating indoles with diaryl disulfides via C-H sulfenylation.[4]
  • A catalyst to synthesize alkyl and aryl nitriles from the corresponding aldehydes via the formation of aldoxime.[1]
  • A selenium precursor to synthesize FeSe nanostructures via electrochemical deposition method.[5]

It can also be used as a versatile reagent for allylic oxidation and oxidative-elimination reactions.[4]

Pictogrammes

Skull and crossbonesHealth hazardEnvironment

Mention d'avertissement

Danger

Mentions de danger

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

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

Classe de danger pour l'eau (WGK)

WGK 2

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


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Certificats d'analyse (COA)

Lot/Batch Number

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Retrouvez la documentation relative aux produits que vous avez récemment achetés dans la Bibliothèque de documents.

Consulter la Bibliothèque de documents

Y. Zhang, et al.,
Heterocycles, 83, 2337-2342 (2011)
Yilin Wang et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 79(5), 1311-1315 (2011-06-15)
A novel method has been developed for the synthesis of thioglycolic acid (TGA)-capped CdSe quantum dots (QDs) in an aqueous medium when selenium dioxide worked as a selenium source and sodium borohydride acted as a reductant. The interaction between CdSe
Metal-free synthesis of amides by oxidative amidation of aldehydes with amines in PEG/oxidant system
Liang J, et al.
Tetrahedron, 67(44), 8532-8535 (2011)
SeO2-Mediated Oxidative Transposition of Pauson-Khand Products
Dibrell SE, et al.
Journal of the American Chemical Society, 142(14), 6483-6487 (2020)
P. Y. Chen, et al.,
Thin Solid Films, 519, 8397-8400 (2011)

Questions

1–2 of 2 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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