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Adamsite
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<p>Adamsite or DM is an <a href="/facts/Organic_compound/gqCNaN45">organic compound</a>; technically, an <a href="/facts/Arsenic/k1c4f44D">arsenical</a> diphenylaminechlorarsine, that can be used as a <a href="/facts/Riot_control_agent/fLPhtA54">riot control agent</a>. DM belongs to the group of <a href="/facts/Chemical_warfare_agent/AwXDDhAR">chemical warfare agents</a> known as <a href="/facts/Vomiting_agent/XpdsRMdT">vomiting agents</a> or <a href="/facts/Sneeze_gas/A0GbJ6Kx">sneeze gases</a>. First synthesized in Germany by <a href="/facts/Heinrich_Otto_Wieland/q6CYa87v">Heinrich Otto Wieland</a> in 1915, it was independently developed by the US chemist <a href="/facts/Roger_Adams/W2yr5mIg">Roger Adams</a> (for whom it is named) at the <a href="/facts/University_of_Illinois_at_Urbana-Champaign/gusw7HoS">University of Illinois</a> in 1918. </p>