bisulphaten.
/bʌɪˈsʌlfeɪt/ Chemistry.
A compound in which one of the two hydrogen atoms of sulphuric acid, H2SO4, has been replaced by another atom or group (as in potassium bisulphate, KHSO4).
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bisulphate1818
1818 W. Henry Elements Exper. Chem. (ed. 8) I. xii. 346 The bi-sulphate or super-sulphate, it is probable, consists of one atom of base with two atoms of acid.
1845 E. A. Parnell Elements Chem. Anal. (new ed.) iii. 96 Silver and palladium are the only noble metals which dissolve in melted bisulphate of potash.
1931 C. Ellis Hydrogenation Org. Substances (ed. 3) lxi. 853 A method of utilizing the acid values of sodium acid sulphate or bisulphate is recommended by Becquevort and Deguide.
1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) XIII. 264/1 Sulfuric acid ionizes in water, forming hydrogen (H+), bisulfate (HSO4−), and sulfate (SO4−−) ions.
1980 M. Orchin et al. Vocab. Org. Chem. iv. 102 Bisulfate Esters, ROSO2OH. Mono esters of sulfuric acid.
This entry has not yet been fully updated (first published 1997; most recently modified version published online June 2018).
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