phosphiten.
/ˈfɒsfʌɪt/, U.S. /ˈfɑsˌfaɪt/ Chemistry.
A salt or ester of phosphorous acid (phosphonic acid, HPO(OH)2); a phosphonate.
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phosphate1788
phosphite1788
phosphorate1795
1788 J. St. John tr. L. B. Guyton de Morveau et al. Method Chym. Nomencl. 69 Nitrats and nitrites,..phosphats and phosphites.
1799 R. Hooper Med. Dict. Phosphites,..salts formed by the combination of the phosphorous acid with different bases; thus, aluminous phosphite, ammoniacal phosphite, &c.
1806 W. Henry Epitome Chem. (ed. 4) i. xv. 196 The phosphites differ considerably in their characters from phosphates.
1890 Jrnl. Chem. Soc. 58 858 Ethyl phosphite, P(OEt)3, is obtained,..when phosphorus trichloride is gradually added to finely divided sodium ethoxide, covered with ether.
1922 T. M. Lowry Inorg. Chem. xxvii. 426 Phosphorous and phosphoric acids are tribasic, forming phosphites.
1970 Encycl. Polymer Sci. & Technol. XII. 748 Tertiary phosphites are among the most efficient groups of materials which have been used as poly(vinyl chloride) stabilizing agents.
1988 L. Stryer Biochem. (ed. 3) vi. 124 In step i, the 3′-phosphorus atom of this incoming unit becomes joined to the 5′-oxygen of the growing chain to form a phosphite triester.
This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022).
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