potassium cyanide
Noun
Meaning
a poisonous salt (KCN) used in electroplating and in photography
Source: WordNetSynonyms
Hypernyms
Examples
He also left Rynn with a jar of powder, telling her that it was a sedative (while it is actually potassium cyanide ) to give to her mother if she ever came for her.
Rynn places a dose of the potassium cyanide into her own cup and then takes the tea and almond cookies to the living room.
It does however, react with sodium or potassium cyanide under alkaline conditions when oxygen is present to form soluble complexes.
Reaction with potassium cyanide gives the 9-cyano-9,10-dehydro derivative.