536164

Ethylene

99.99%

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

Properties

• vapor density: 0.97 (vs air)
• Quality Level: 100
• 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[1] that regulates various physiological and developmental processes, such as ripening of fruit, abscission, senescence and responses to wounding in plants.[2] Pd(II) and Ni(II)-based catalysts are reported to catalyze the polymerization of ET to afford high molecular weight polymers.[3] Mechanism of Diels-Alder Reaction of 1,3-butadiene with ET has been investigated.[4] Diels-Alder reaction between butadiene and ET, via concerted and the stepwise mechanisms has been investigated by ab initio MO methods.[5] 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.[6] The utility of microsized spent tea leaf powder (MSTLP) as an ethylene adsorbent has been investigated.[7]

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.[8]

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

Safety Information

• pictograms: GHS02,GHS04,GHS07
• signalword: Danger
• hcodes: H220,H280,H336
• pcodes: P261 - P271 - P304 + P340 + P312 - P403 + P233 - P405 - P410 + P403
• Hazard Classifications: Flam. Gas 1 - Press. Gas Liquefied gas - STOT SE 3
• target_organs: Respiratory system
• Storage Class: 2A - Gases
• wgk_germany: nwg
• flash_point_f: -148.0 °F - closed cup
• flash_point_c: -100 °C - closed cup
• ppe: Eyeshields, Faceshields, Gloves, multi-purpose combination respirator cartridge (US)