Roussin's salt


Rous·​sin's salt
: any of two series of alkali metal salts that are nitrosyl and sulfur complexes of iron:
: a red unstable salt having the general formula M[Fe(NO)2S] and obtainable by reaction of nitric oxide with ferrous sulfide
: a black more stable salt having the general formula M[Fe4(NO)7S3] and obtainable (as by treatment with alkali) from a red salt

Word History


after François-Zacharie Roussin †1894 French chemist

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“Roussin's salt.” Dictionary, Merriam-Webster, Accessed 6 Dec. 2023.

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