Describing compounds or reactions involving both cyanide and chlorine, typically in disinfection or water treatment chemistry.
From cyano- (cyanide) + chlorous (relating to chlorine compounds, from Greek chloros 'green-yellow'). The term emerged from water chemistry research.
When cities treat water with chlorine, sometimes cyanide compounds in industrial wastewater can create cyanochlorous byproducts—a nasty chemical reaction that water engineers work hard to prevent.
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