cacodylic acid

noun
cac·​o·​dyl·​ic acid | \ ˌka-kə-ˈdi-lik- How to pronounce cacodylic acid (audio) \

Definition of cacodylic acid

: a toxic crystalline compound of arsenic C2H7AsO2 used especially as an herbicide

First Known Use of cacodylic acid

1840, in the meaning defined above

History and Etymology for cacodylic acid

German Kakodyl, the radical (CH3)2As + -ic entry 1; Kakodyl from Greek kakṓdēs "foul-smelling" (from kakós "bad, ill, foul" + -ōdēs "having a given smell," adjective derivative from od-, the base of ózein "to smell, give off odor") + German -yl -yl — more at caco-, odor

Note: According to Jöns Jakob berzelius, he suggested the name Kakodyl to the chemist Robert bunsen, who was investigating it, because of "the extremely repellent smell of all of its compounds" ("… für welche ich Bunsen den Namen Kakodyl vorschlug, in Bezug auf den höchst wiedrigen Geruch aller seiner Verbindungen" - Jahresbericht über die Fortschritte der physischen Wissenschaften von Jacob Berzelius, 20. Jahrgang [1841], p. 527).

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The first known use of cacodylic acid was in 1840

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Last Updated

18 May 2021

Cite this Entry

“Cacodylic acid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cacodylic%20acid. Accessed 20 Jun. 2021.

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More Definitions for cacodylic acid

cacodylic acid

noun
cac·​o·​dyl·​ic acid | \ ˌkak-ə-ˌdil-ik- How to pronounce cacodylic acid (audio) \

Medical Definition of cacodylic acid

: a toxic crystalline compound of arsenic C2H7AsO2 used especially as an herbicide

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