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Tutton's salt

Tutton's salts are a family of salts with the formula M2M'(SO4)2.(H2O)6. These materials are "double salts," which means that they contain two different cations, M+ and M'2+. Examples of some Tutton salts, M = NH4+ and M' = V2+ and Cu2+.[1] Related to the Tutton's salts are the alums, which are also double salts but with the formula MM'(SO4)2.(H2O)12. Such salts were of historical importance because they were obtainable in high purity and served as reliable reagents and spectroscopic standards.


  1. ^ Greenwood, N. N.; & Earnshaw, A. (1997). Chemistry of the Elements (2nd Edn.), Oxford:Butterworth-Heinemann. ISBN 0-7506-3365-4.
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