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536164 Sigma-Aldrich

Ethylene

99.99%

Synonym: Ethene

  • CAS Number 74-85-1

  • Linear Formula CH2=CH2

  • Molecular Weight 28.05

  •  Beilstein/REAXYS Number 1730731

  •  EC Number 200-815-3

  •  MDL number MFCD00008604

  •  PubChem Substance ID 24878139

  •  NACRES NA.22

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Properties

Related Categories Chemical Synthesis, Specialty Gases, Synthetic Reagents More...
Quality Level   100
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

Description

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

110 g in steel cylinder

Recommended products

Z146706 CGA 180 Regulator OR Z146943 CGA 110 Valve with Z147095 CGA 110 to CGA 180 adapter and Z146986 washer for valve. Also recommended Z562599 CGA 180 Lecture bottle station.

Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
Precautionary statements 
Target organs 
Central nervous system
RIDADR 
UN 1962 2.1
WGK Germany 
nwg
RTECS 
KU5340000
Flash Point(F) 
-148.0 °F - closed cup
Flash Point(C) 
-100 °C - closed cup
Protocols & Articles

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. Since the reaction involves the formation of a cyclic product vi...
Keywords: Addition reactions, Asymmetric synthesis, Building blocks, Catalysis, Cycloadditions, Diels-Alder reaction, Immobilization

Peer-Reviewed Papers
15

References

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