Carbonyl Sulfide

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 It might be outdated or ideologically biased.

Carbonyl Sulfide


COS, a higly flammable, colorless, odorless gas that liquifies at – 50.2°C and freezes at – 138.2°C. Carbonyl sulfide is readily soluble in carbon disulfide, toluene, and alcohol but somewhat less soluble in water. It is gradually decomposed by water to form CO2 and H2S. In the absence of moisture, carbonyl sulfide is stable. Upon heating it decomposes:

2COS = CO2 + CS2 and 2COS = 2CO + 2S

Carbonyl sulfide is obtained by passing a mixture of sulfur vapor and carbon monoxide through a heated tube:

S + CO = COS

It is obtained in pure form by the action of acids on ammonium thiocarbamate, CO(NH2)(SNH4). Carbonyl sulfide is used in the industrial production of urea.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
The gaseous mixture created through partial oxidation contains CO, C[O.sub.2] , [H.sub.2]O, [H.sub.2], C[H.sub.4] and hydrogen sulfide ([H.sub.2] S) and carbon oxysulfide (COS).
The emissions may be carbon disulfide ([CS.sub.2]) and carbon oxysulfide (also known as carbonyl sulfide, formula COS).
The two first of these reactions show how carbon disulfide may be converted into the carbon oxysulfide. The next four show how silver and copper may tarnish in contact with each of these vapors.