Etilovaia Zhidkost

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Etilovaia Zhidkost’


an oily liquid with a characteristic fruity odor and a density of 1.5–1.7 g/cm3.

Etilovaia zhidkost’ is a mixture of tetraethyllead or tetra-methyllead (50–62 percent by mass) with ethyl bromide, dibromoethane, and other compounds that remove lead from a motor in the form of volatile, halogen-containing compounds. The mixture reduces the knocking tendency of the gasolines used in airplanes and motor vehicles. Thus, when 1 kg of gasoline is treated with 0.5–4 milliliters of the mixture, its octane number will increase by 4–15.

Etilovaia zhidkost’ is highly toxic, and poisoning is possible by breathing air contaminated with the vapors from the liquid or by letting it come into contact with the skin. For this reason, the use of etilovaia zhidkost’ is decreasing.


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.