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单词 persulphuric
释义

persulphuricpersulfuricadj.

Brit. /ˌpəːsʌlˈfjʊərɪk/, /ˌpəːsʌlˈfjɔːrɪk/, U.S. /ˌpərsəlˈfjurɪk/
Forms: 1800s– persulphuric, 1900s– persulfuric (U.S.).
Origin: Formed within English, by derivation; modelled on a French lexical item. Etymons: per- prefix, sulphuric adj.
Etymology: < per- prefix + sulphuric adj., after French persulfurique (in acide persulfurique persulphuric acid; M. Berthelot 1878, in Comptes rendus 86 20).
Chemistry.
1. persulphuric acid n. either of two strongly oxidizing acids: peroxymonosulphuric acid, H2SO5, and peroxydisulphuric acid, H2S2O8.
ΘΚΠ
the world > matter > chemistry > chemical substances > acids > [noun] > acids-named > containing sulphur > others
hydrosulphuric acid1823
rhodanic1852
persulphuric acid1878
thiolinic acid1899
thiomalic acid1905
1878 Harper's Mag. May 944/2 It is soluble in concentrated sulphuric acid without decomposition, forming persulphuric acid.
1883 Athenæum 16 June 767/2 The formation of Berthelot's persulphuric acid.
1922 T. M. Lowry Inorg. Chem. xxii. 261 Hydrogen peroxide... It converts sulphuric acid into persulphuric acid..H2SO5.
1996 Amer. Midland Naturalist 136 102 Samples..were..digested in 25 or 100 cc volumetric flasks with concentrated H2SO4 followed by persulfuric acid.
2. persulphuric oxide n. a highly explosive substance which has been given the formula S2O7, but may be a mixture of other oxides or acids of sulphur. Obsolete. rare.
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1878 Harper's Mag. May 944/2 Its formula..is S2O7, and hence the discoverer names it persulphuric oxide.
This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022).
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adj.1878
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