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adamsite

[ad-uh m-zahyt] /ˈæd əmˌzaɪt/
noun, Chemistry, Military
1.
a yellow irritant smoke, containing a poisonous form of arsenic and used as a harassing agent.
Origin
1920-1925
1920-25; named after R. Adams; see -ite1
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for adamsite

adamsite

/ˈædəmˌzaɪt/
noun
1.
a yellow poisonous crystalline solid that readily sublimes; diphenylaminechlorarsine. It is used in chemical warfare as a vomiting agent. Formula: C6H4AsClNHC6H4; relative density: 1.65; melting pt: 195°C; boiling pt: 410°C Also called phenarsazine chloride
Word Origin
C20: named after Roger Adams (1899–1971), American chemist
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Encyclopedia Article for adamsite

in chemical warfare, sneeze gas developed by the United States and used during World War I. Adamsite is an arsenical diphenylaminechlorarsine and an odourless crystalline organic compound employed in vaporous form as a lung irritant. It appears as a yellow smoke that irritates eyes, lungs, and mucous membranes and causes sneezing, vomiting, and acute discomfort in the nose, throat, and chest. Eventually severe nausea develops, with headache, general physical weakness, and despondency. The effect usually lasts about 12 hours. The only protection against inhaling the gas is a good mechanical filter

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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