157-18-6

Basic information

• Product Name: oxirene
• Synonyms: oxirene
• CAS NO: 157-18-6
• Molecular Formula: C₂H₂O
• Molecular Weight: 42.0367
• Mol File: 157-18-6.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 55.1°Cat760mmHg
• Flash Point: °C
• Appearance: /
• Density: 1.118g/cm³
• Vapor Pressure: 252mmHg at 25°C
• Refractive Index: 1.467
• CAS DataBase Reference: oxirene(CAS DataBase Reference)
• NIST Chemistry Reference: oxirene(157-18-6)
• EPA Substance Registry System: oxirene(157-18-6)

Safety Data

• Hazardous Substances Data: 157-18-6(Hazardous Substances Data)

Usage

InChI:InChI=1/C2H2O/c1-2-3-1/h1-2H

Upstream product

• 74-85-1 ethene 

Downstream Products

• 17844-23-4 4-methylene-hex-5-en-1-ol 
• 131180-38-6 7-isopropyl-2,3-dihydrobenzofuran 
• 169393-25-3 5-cyclohexyl-3-pentyn-1-ol 
• 887-21-8 2-(diphenylphosphinyl)ethanol 
• 5611-61-0 13-cyclopent-2-en-1-yltridecan-1-ol 

Related news

Push-pull substitution evidently does not stabilize the oxirene (cas 157-18-6) system: an AM1 and ab initio study09/30/2019

AM1 and ab initio calculations were performed on 1-amino-2-methanoyloxirene (1-amino-2-formyloxirene), the two corresponding oxo carbenes ( ketocarbenes ) resulting from alternative C-O cleavage, and the transition states linking these species. The purpose was to see if delocalization of elec...detailed

Assessment of density functional theory for the prediction of the nature of the oxirene (cas 157-18-6) stationary point09/29/2019

The nature of the stationary point of oxirene, cyclic C 2 H 2 O, has been examined using selected GGA and hybrid functionals in combination with a number of basis sets. All GGA functionals (BLYP, BP91, PBE, HCTH, HCTH147, and HCTH407) predict the stationary point to be a transiti...detailed

Relevant articles and documents

Selective synthesis of ethylene oxide through liquid-phase epoxidation of ethylene with titanosilicate/H2O2 catalytic systems

Liquid-phase epoxidation of ethylene to ethylene oxide (EO) with H2O2 over various titanosilicate catalysts like Ti-MWW, TS-1, Ti-MOR and Ti-Beta has been investigated. The effects of solvent, catalyst amount, reaction pressure, temperature and time on the catalytic performance of Ti-MWW have been studied in detail. Ti-MWW preferred acetonitrile as a solvent and showed the highest reactivity and EO selectivity among the titanosilicate catalysts investigated. Under optimized reaction conditions, Ti-MWW gave a EO selectivity high as 97.9% as well as a reasonable utilization efficiency of H2O2 of 77.7%. Ti-MWW was gradually deactivated after repeated use in ethylene epoxidation. High-temperature calcination easily recovered the catalytic activity of deactivated Ti-MWW after removing ethylene glycol (EG) and other heavy byproducts with high boiling points that were deposited inside micropores. The issues of molecular dimension and reactivity have also been considered by comparing the epoxidation of linear alkenes with different lengths (C2 to C6) between two representative titanosilicates Ti-MWW and TS-1. Ethylene, with the smallest dynamic diameter but containing electron-deficient C=C double bonds, was more difficult to be epoxidized than other alkenes with higher intrinsic activities.

METHOD OF STARTING-UP A PROCESS OF PRODUCING AN ALKYLENE OXIDE USING A HIGH-EFFICIENCY CATALYST

A method for starting-up a high efficiency alkylene oxide catalyst is described. A feed gas comprising an alkylene, oxygen, and at least one organic chloride is introduced to the catalyst. The molar ratio of oxygen to alkylene, reaction temperature, and overall chloriding effectiveness are adjusted to specified ranges of values within a specified catalyst aging period.