OsO4
Osmic Os"mic, a. (Chem.) Pertaining to, derived from, or containing, osmium; specifically, designating those compounds in which it has a valence higher than in other lower compounds; as, osmic oxide. [1913 Webster]

{Osmic acid}. (Chem.) (a) Osmic tetroxide. [Obs.] (b) Osmic acid proper, an acid analogous to sulphuric acid, not known in the free state, but forming a well-known and stable series of salts (osmates), which were formerly improperly called osmites.

{Osmic tetroxide} (Chem.), a white volatile crystalline substance, {OsO4}, the most stable and characteristic of the compounds of osmium. It has a burning taste, and gives off a vapor, which is a powerful irritant poison, violently attacking the eyes, and emitting a strong chlorinelike odor. Formerly improperly called {osmic acid}. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • OsO4 — Tetroxide Tet*rox ide, n. [Tetra + oxide.] (Chem.) An oxide having four atoms of oxygen in the molecule; a quadroxide; as, osmium tetroxide, {OsO4}. [1913 Webster] …   The Collaborative International Dictionary of English

  • OsO4 — Strukturformel Allgemeines Name Osmiumtetroxid Andere Namen Osmium(VIII) oxid …   Deutsch Wikipedia

  • OsO4 — Tétroxyde d osmium Tétroxyde d osmium Général …   Wikipédia en Français

  • osmium tetroxide — (= OsO4) Used as a post fixative/stain in electron microscopy. Membranes in particular are osmiophilic, ie. bind osmium tetroxide …   Dictionary of molecular biology

  • osmic acid — OsO4; a volatile caustic and strong oxidizing agent; colorless crystals, poorly soluble in water, but soluble in organic solvents; the aqueous solution is a fat and myelin stain and a general fixative …   Medical dictionary

  • Osmium tetroxide — Osmium tetroxide …   Wikipedia

  • Tetróxido de osmio — Nombre ( …   Wikipedia Español

  • Осмий — (хим.; Osmium; Os = 190,3 [O = 15,96], К. Зейберт, 1891) принадлежит к семье платиновых металлов, один из тяжелых членов ее; по атомному весу он легче иридия, а по удельному немного тяжелее его. По всем свойствам он занимает в VIII группе… …   Энциклопедический словарь Ф.А. Брокгауза и И.А. Ефрона

  • осмий — я; м. Химический элемент (Os), твёрдый металл голубовато белого цвета (входит как компонент в состав сверхтвёрдых и износостойких сплавов). * * * осмий (лат. Osmium), Os, химический элемент VIII группы периодической системы, относится к… …   Энциклопедический словарь

  • Osmium — This article is about the chemical element. For other uses, see Osmium (disambiguation). rhenium ← osmium → iridium Ru ↑ Os ↓ Hs …   Wikipedia

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