quadroxalaten.
/kwɒˈdrɒksəleɪt/, /kwəˈdrɒksəleɪt/, U.S. /kwɑˈdrɑksəˌleɪt/ Chemistry. Now rare.
A compound containing four oxalate groups in the empirical formula. Chiefly in potassium quadroxalate, †quadroxalate of potash.
ΚΠ
1808 Philos. Trans. (Royal Soc.) 98 101 He might consider..the quadroxalate as [consisting of] 1 and 2, or 2 particles potash with 4 acid.
1822 G. Francis Dict. Arts at Quadri The quadrioxalate of potass consists of 1 part potass to 4 of oxalic acid.
1876 J. Harley Royle's Man. Materia Med. (ed. 6) 316 Quadroxalate of Potash, erroneously called ‘Salt of Lemons’.
1955 B. C. L. Kemp Elem. Org. Chem. (new ed.) xiii. 190 An interesting double-salt of potassium hydrogen oxalate and oxalic acid (potassium quadroxalate) KHC2O4.H2C2O4.2H2O is sold commercially as ‘salts of lemon’.
1982 Acta Crystallographica B. 38 2809/1 The tetroxalates—formerly quadroxalates—are superacid salts of formula MH3(C2O4)2.2H2O.
This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022).
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n.1808- sournesses
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