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387614

Sigma-Aldrich

Ethylene oxide

≥99.5%

Synonym(s):

Oxirane

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227 G
$882.00

$882.00

Estimated to ship onMarch 31, 2025

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227 G
$882.00

About This Item

Empirical Formula (Hill Notation):
C2H4O
CAS Number:
75-21-8
Molecular Weight:
44.05
Beilstein/REAXYS Number:
102378
EC Number:
200-849-9
MDL number:
MFCD00014482
UNSPSC Code:
12142100
PubChem Substance ID:
24864134
assay:
≥99.5%

$882.00

Estimated to ship onMarch 31, 2025

Request a Bulk Order

Quality Level

200

assay

≥99.5%

refractive index

n20/D 1.3597 (lit.)

bp

10.7 °C (lit.)

mp

−111 °C (lit.)

density

0.882 g/mL at 25 °C (lit.)

functional group

ether

storage temp.

2-8°C

SMILES string

C1CO1

InChI

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

InChI key

IAYPIBMASNFSPL-UHFFFAOYSA-N

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General description

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]

Packaging

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

Other Notes

See Technical Information Bulletin AL-151 Gas Regulators: Selection, Installation, and Operation

Legal Information

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

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Danger

Hazard Classifications

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

target_organs

Central nervous system, Nervous system, Respiratory system

Storage Class

2A - Gases

wgk_germany

WGK 3

flash_point_f

-4.0 °F - closed cup

flash_point_c

-20.0 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
MKCV3797
MKCV1308
MKCT1419
STBK7598
STBK5985

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Multifunctional Poly (ethylene glycol)s
Obermeier B, et al.
Angewandte Chemie (International ed. in English), 50(35), 7988-7997 (2011)
Surface active ethylene oxide adducts (2013)
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)
N-heterocyclic carbene-organocatalyzed ring-opening polymerization of ethylene oxide in the presence of alcohols or trimethylsilyl nucleophiles as chain moderators for the synthesis of α, ω-heterodifunctionalized poly (ethylene oxide)s
Raynaud J, et al.
Macromolecules, 43(6), 2814-2823 (2010)
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)
View All Related Papers

Questions

1–2 of 2 Questions  

  1. 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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  2. 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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