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Sigma-Aldrich

Ethylene

99.99%

Synonym(s):

Ethene

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About This Item

Linear Formula:
CH2=CH2
CAS Number:
74-85-1
Molecular Weight:
28.05
Beilstein:
1730731
EC Number:
200-815-3
MDL number:
MFCD00008604
UNSPSC Code:
12142100
PubChem Substance ID:
24878139
NACRES:
NA.22

vapor density

0.97 (vs air)

vapor pressure

35.04 atm ( 20 °C)

Assay

99.99%

autoignition temp.

842 °F

expl. lim.

36 %

bp

−104 °C (lit.)

mp

−169 °C (lit.)

SMILES string

C=C

InChI

1S/C2H4/c1-2/h1-2H2

InChI key

VGGSQFUCUMXWEO-UHFFFAOYSA-N

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General description

Ethylene (ET), a simple olefin, is an important synthetic reagent. It is also a plant hormone that regulates various physiological and developmental processes, such as ripening of fruit, abscission, senescence and responses to wounding in plants. Pd(II) and Ni(II)-based catalysts are reported to catalyze the polymerization of ET to afford high molecular weight polymers. Mechanism of Diels-Alder Reaction of 1,3-butadiene with ET has been investigated. Diels-Alder reaction between butadiene and ET, via concerted and the stepwise mechanisms has been investigated by ab initio MO methods. Dehydration of algae-produced ethanol to ET in the presence of nanoscale catalyst HZSM-5 (protonated Zeolite Socony Mobil-5) shows promising results in replacing fossil fuel methods for the industrial production of ET. The utility of microsized spent tea leaf powder (MSTLP) as an ethylene adsorbent has been investigated.

Application

Ethylene was used in the preparation of polyethylene (PE), by polymerization in the presence of titanium complexes having F(s) or CF3(s) containing phenoxy-imine chelate ligands.

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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control valve

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hose barb

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purge valve

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recommended

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regulator

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Description
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Signal Word

Danger

Hazard Statements

H220,H280,H336

Hazard Classifications

Flam. Gas 1 - Press. Gas Liquefied gas - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

2A - Gases

WGK

nwg

Flash Point(F)

-148.0 °F - closed cup

Flash Point(C)

-100 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Highly active ethylene polymerization catalysts based on titanium complexes having two phenoxy-imine chelate ligands.
Ishii S-I, et al.
J. Mol. Catal. A: Chem., 179(1), 11-16 (2002)
New Pd (II)-and Ni (II)-based catalysts for polymerization of ethylene and. alpha.-olefins
Johnson LK, et al.
Journal of the American Chemical Society, 117(23), 6414-6415 (1995)
Ethylene and the regulation of plant development.
Schaller GE.
BMC Biology, 10(1), 9-9 (2012)
Spent tea leaves: A new non-conventional and low-cost biosorbent for ethylene removal.
Tzeng JH, et al.
International Biodeterioration & Biodegradation, 104, 67-73 (2015)
Hiroaki Wakayama et al.
The journal of physical chemistry. A, 111(51), 13575-13582 (2007-12-07)
The concerted and the stepwise mechanisms of the Diels-Alder reactions of butadiene with silaethylene and disilene were studied by ab initio MO methods. For the reaction of butadiene and silaethylene, an asymmetric concerted process that is almost stepwise and two
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Articles

Diels–Alder Reaction

The Diels–Alder reaction is the reaction between a conjugated diene and an alkene (dienophile) to form unsaturated six-membered rings. It is also referred to as a cycloaddition.

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