The Standard Electrical Dictionary

1. Olefiant Gas

   A compound gas; C2H4; composed of carbon, 24; hydrogen, 4; molecular weight, 28; specific gravity, .981. It is a dielectric of about the resistance of air. Its specific inductive capacity at atmospheric pressure is 1.000722 (Boltzman.) Synonym--Ethene; heavy carburetted hydrogen. [Transcriber's note: Also called ethylene. A primary use is polyethylene plastic.]