pyrosulphatepyrosulfaten.
/ˌpʌɪrə(ʊ)ˈsʌlfeɪt/, U.S. /ˌpaɪroʊˈsəlˌfeɪt/ Chemistry.
A salt of pyrosulphuric acid.
ΚΠ
1872 Jrnl. Chem. Soc. 25 669 On boiling potassium pyrosulphate with an alcoholic solution of sodium ethylate, potassium sulphovinate is produced.
1940 G. H. J. Adlam & L. S. Price Higher School Certificate Inorg. Chem. (ed. 2) xxii. 187 On gentle heating, it forms sodium pyrosulphate.
1954 Thorpe's Dict. Appl. Chem. (ed. 4) XI. 290/2 The pyrosulphates form no compounds with the bisulphates.
1997 M. Csuros Environmental Sampling & Anal.: Lab Man. vii. 92 Samples that fail to dissolve in any other way can usually be brought into solution by fusing them with a high-temperature acid such as potassium pyrosulphate (K2S2O7).
This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022).
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