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387614

Sigma-Aldrich

Ethylene oxide

≥99.5%

Synonyme(s) :

Oxirane

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About This Item

Formule empirique (notation de Hill):
C2H4O
Numéro CAS:
Poids moléculaire :
44.05
Beilstein:
102378
Numéro CE :
Numéro MDL:
Code UNSPSC :
12142100
ID de substance PubChem :
Essai:
≥99.5%
Le tarif et la disponibilité ne sont pas disponibles actuellement.

Niveau de qualité

Essai

≥99.5%

Indice de réfraction

n20/D 1.3597 (lit.)

pb

10.7 °C (lit.)

Pf

−111 °C (lit.)

Densité

0.882 g/mL at 25 °C (lit.)

Groupe fonctionnel

ether

Température de stockage

2-8°C

Chaîne SMILES 

C1CO1

InChI

1S/C2H4O/c1-2-3-1/h1-2H2

Clé InChI

IAYPIBMASNFSPL-UHFFFAOYSA-N

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Description générale

Ethylene oxide is generally synthesized by chlorohydrine process and direct oxidation of ethylene with air, catalyzed by silver(Ag).[1]

Ethylene oxide serves as a starting material to produce ethylene glycols, surfactants, emulsifiers, and polyurethane foams.[2]

Application

Ethylene oxide can be used as a precursor to synthesize:
  • Poly(ethylene oxides) and poly(ethyleneglycol)s.[3][4]
  • Ethylene carbonate via coupling reaction with CO2 catalyzed by imidazolium zinc tetrahalides.[5];
  • α,ω-heterodifunctionalized poly(ethylene oxide)s using organocatalyst N-heterocyclic carbenes via ring-opening polymerization.[6]

Conditionnement

Supplied in a carbon steel lecture bottle with a CGA180M/CGA110F needle valve installed.

Compatible with the following:
  • Aldrich® lecture-bottle station systems
  • Aldrich® lecture-bottle gas regulators

Autres remarques

Informations légales

Aldrich is a registered trademark of Sigma-Aldrich Co. LLC

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Vanne de purge

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Mention d'avertissement

Danger

Classification des risques

Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Carc. 1B - Chem. Unst. Gas A - Eye Dam. 1 - Flam. Gas 1A - Muta. 1B - Press. Gas Liquefied gas - Repr. 1B - Skin Corr. 1B - STOT RE 1 - STOT SE 3

Organes cibles

Central nervous system, Nervous system, Respiratory system

Code de la classe de stockage

2A - Gases

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

-4.0 °F - closed cup

Point d'éclair (°C)

-20.0 °C - closed cup

Équipement de protection individuelle

Eyeshields, Faceshields, Gloves


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Certificats d'analyse (COA)

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Les clients ont également consulté

Polymerization of ethylene oxide, propylene oxide, and other alkylene oxides: synthesis, novel polymer architectures, and bioconjugation
Herzberger, Jana and Niederer, et al.
Chemical Reviews, 116, 2170-2243 (2016)
Surface active ethylene oxide adducts (2013)
Multifunctional Poly (ethylene glycol)s
Obermeier B, et al.
Angewandte Chemie (International ed. in English), 50(35), 7988-7997 (2011)
Imidazolium zinc tetrahalide-catalyzed coupling reaction of CO2 and ethylene oxide or propylene oxide
Kim HS, et al.
J. Catal., 220(1), 44-46 (2003)
Non-fouling surfaces produced by gas phase pulsed plasma polymerization of an ultra low molecular weight ethylene oxide containing monomer
Wu YJ, et al.
Colloids and Surfaces. B, Biointerfaces, 18(3-4), 235-248 (2000)

Questions

1–2 sur 2 questions  
  1. How is shipping temperature determined? And how is it related to the product storage temperature?

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

    1 réponse
    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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