536164

Ethylene

99.99%

• Synonyme(s) : Ethene
• Formule linéaire : CH₂=CH₂
• Numéro CAS: 74-85-1
• Poids moléculaire : 28.05
• Numéro Beilstein : 1730731
• Numéro CE : 200-815-3
• Numéro MDL: MFCD00008604
• Code UNSPSC : 12142100
• ID de substance PubChem : 24878139
• Nomenclature NACRES : NA.22

Propriétés

• Densité de vapeur: 0.97 (vs air)
• Pression de vapeur: 35.04 atm ( 20 °C)
• Pureté: 99.99%
• Température d'inflammation spontanée: 842 °F
• Limite d'explosivité: 36 %
• Point d'ébullition: −104 °C (lit.)
• Pf: −169 °C (lit.)
• Chaîne SMILES: C=C
• InChI: 1S/C2H4/c1-2/h1-2H2
• Clé InChI: VGGSQFUCUMXWEO-UHFFFAOYSA-N

Description

Description générale

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.

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

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

Informations légales

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

Informations sur la sécurité

• Pictogrammes: GHS02,GHS04,GHS07
• Mention d'avertissement: Danger
• Mentions de danger: H220,H280,H336
• Conseils de prudence: P261 - P271 - P304 + P340 + P312 - P403 + P233 - P405 - P410 + P403
• Classification des risques: Flam. Gas 1 - Press. Gas Liquefied gas - STOT SE 3
• Organes cibles: Respiratory system
• Code de la classe de stockage: 2A - Gases
• Classe de danger pour l'eau (WGK): nwg
• Point d'éclair (°F): -148.0 °F - closed cup
• Point d'éclair (°C): -100 °C - closed cup
• Équipement de protection individuelle: Eyeshields, Faceshields, Gloves, multi-purpose combination respirator cartridge (US)