I.U.P.A.C. Nomenclature of Inorganic Chemistry 1970 (Butterworths Scientific Publications London 197l) recommends (Rule 6.2) joining hydrogen to the following name of the anion for acid salts, thus: potassium hydrogenheptanedioate. Previous practice is, however, followed in the present rules.

This HTML reproduction of Sections A, B and C of IUPAC "Blue Book" is as close as possible to the published version [see Nomenclature of Organic Chemistry, Sections A, B, C, D, E, F, and H, Pergamon Press, Oxford, 1979. Copyright 1979 IUPAC.] If you need to cite these rules please quote this reference as their source.

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