persulphatepersulfaten.
/pəˈsʌlfeɪt/, U.S. /pərˈsəlˌfeɪt/ Chemistry.
Originally: a sulphate containing a high proportion of sulphate ions. Now: a salt or ester of persulphuric acid.
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the world > matter > chemistry > chemical substances > acids > [noun] > acid radicals
persulphate1813
suberyl1836
nitrion1868
stearyl1868
nitroxyl1871
nitro group1877
haloacyl1951
mevalonate1957
1813 tr. J. J. Berzelius in Ann. Philos. 2 452 If instead of the sulphate of iron we were to make choice of the persulphate of iron.
1874 A. B. Garrod & E. B. Baxter Essentials Materia Medica (ed. 4) 39 A mixed solution of sulphate and persulphate of iron.
1907 Westm. Gaz. 21 Sept. 14/2 Choose a reducer that attacks the extremely dense parts, such as the persulphate reducer.
1980 Daily Tel. 9 June 2/6 Persulphates increase water content and improve the elasticity of dough.
1990 Nucleic Acids Res. 18 378/1 Add 1/100 vol. of 10% ammonium persulfate and 1/1000 vol. TEMED, and let polymerize for 30 min.
This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022).
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