Yellow Cross (Gelbkreuz) is a World War I chemical warfare agent usually based on sulfur mustard (HS, Yperite, Lost).
The original Gelbkreuz was a composition of 80-90% of sulfur mustard and 10-20% of tetrachloromethane or chlorobenzene as a solvent which lowered its viscosity and acted as an antifreeze, or, alternatively, 80% sulfur mustard, 10% bis(chloromethyl) ether, and 10% tetrachloromethane. A later formulation, Gelbkreuz 1, was a mixture of 40% ethyldichloroarsine, 40% ethyldibromoarsine, and 20% of bis(chloromethyl) ether. In some cases nitrobenzene was used to mask the material's characteristic odor. French "ypérite no.20" was a similar mixture of 80% sulfur mustard and 20% tetrachloromethane.
Yellow Cross is also a generic World War I German marking for artillery shells with chemical payload affecting exposed surfaces of the body.
Famous quotes containing the words yellow and/or cross:
“O yellow eye,
let me be sick with your heat,
let me be feverish and frowning.”
—Anne Sexton (1928–1974)
“I know we’re not saints or virgins or lunatics; we know all the lust and lavatory jokes, and most of the dirty people; we can catch buses and count our change and cross the roads and talk real sentences. But our innocence goes awfully deep, and our discreditable secret is that we don’t know anything at all, and our horrid inner secret is that we don’t care that we don’t.”
—Dylan Thomas (1914–1953)