Definitions

1. adjective

relating to or denoting a chemical reaction in which a solution containing a copper salt, especially copper(II) sulfate, changes colour when a substance containing a copper-reducing agent, especially cyanide, is added.

“The cyanochroic properties of the substance made it useful for detecting poison.”

2. adjective

relating to or denoting a chemical reaction in which a solution containing a copper salt, especially copper(II) sulfate, changes color when a substance containing a copper-reducing agent is added.

“The cyanochroic reaction occurred when the cyanide ions were introduced to the copper sulfate solution.”