from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. olefiant gas, or ethylene
- n. any of the series of unsaturated hydrocarbons of which ethylene is a type
from The Century Dictionary and Cyclopedia
- n. A general name of hydrocarbons having the formula CnH2n, homologous with ethylene: so called from their property of forming oily compounds with bromine and chlorin, like Dutch oil or liquid.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. any unsaturated aliphatic hydrocarbon
In elimination, two groups on adjacent carbon atoms are lost and an olefine (alkene) is formed.
There are three kinds of petroleum in use, namely those yielding on distillation: 1st, paraffin; 2nd, asphalt; 3rd, olefine.
For this reason a larger quantity of KOH is necessary for a given reaction (formation of olefine from alkyl bromide) than in case of the iodine compound.
The tendency to undergo oxidation to carbon dioxide on the part of carbon monoxide, and the absence of such tendency on the part of the defines when exposed to oxidizing influences at a temperature of 100® or below, serves as a most important criterion for the purpose of distinguishing between CO and the olefine group.
My experiments upon the action of defines show, however, that it is essential to the identification of carbon monoxide that the formation of carbon dioxide by the action of the palladium chloride be proved by means of lime water or other indicator, as otherwise the reduction of the palladium salt may be due to a member of the olefine group.
Caucasian oils are mainly composed of defines or substances related to the olefine group.