osmiten.
/ˈɒzmʌɪt/, U.S. /ˈɑzˌmaɪt/ Chemistry. Now rare.
A salt obtained following reduction of osmic acid, or derived from a lower oxide of osmium; spec. a salt of the anion [OsO2(OH)4]2−. Cf. osmate n., osmiate n.
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1844 Philos. Mag. 24 394 The liquor..deposits a crystalline powder of osmite of potash.
1852 T. F. Betton tr. V. Regnault Elements Chem. II. iii. 352 Osmite of potassa is obtained by pouring a few drops of alcohol into a solution of osmiate of potassa.
1877 H. Watts Dict. Chem. (new ed.) IV. 246 Osmites.—OsMO2 or M2O.OsO3. [Note] Claus designates these salts as osmates.
1891 W. Ramsay Syst. Inorg. Chem. xxix. 483 Potassium osmite, K2OsO4.2H2O, is prepared by dissolving the tetroxide in potassium hydroxide, and adding alcohol.
1958 Jrnl. Amer. Chem. Soc. 80 2652/2 This color change is apparently characteristic of some lower oxidation state of osmium or of the osmite ion.
This entry has been updated (OED Third Edition, September 2004; most recently modified version published online March 2022).
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n.1844