olefiant gas, made from oil, burns with a brighter and purer light than common coal gas, but it is more costly.
Brédikhine, Vogel, and Huggins were unanimous in pronouncing its spectrum to be that of marsh or olefiant gas.
This was at one time called the olefiant gas, because when mixed with chlorine an oily looking compound was produced.
Of the rays emitted by our heated plate of copper, olefiant gas absorbs ten times the quantity absorbed by carbonic acid.
One pound of common oil yields about 15 feet of olefiant gas.
Of the rays emitted by a carbonic oxide flame, carbonic acid absorbs twice as much as olefiant gas.
Care should be taken that the olefiant gas is rather in excess.
olefiant gas may therefore be expected to evolve a double quantity of carbon in its flame, which should emit a double light.
This gas is sometimes called “olefiant gas,” from the property it has of forming an oily substance when mixed with chlorine.
A similar relation holds good between marsh gas and olefiant gas (ethylene).