osmium tetroxide

osmium tetroxide
noun Date: 1869 a crystalline compound OsO4 that is an oxide of osmium, has a poisonous irritating vapor, and is used as a catalyst, oxidizing agent, and biological fixative and stain

New Collegiate Dictionary. 2001.

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  • Osmium tetroxide — Osmium tetroxide …   Wikipedia

  • osmium tetroxide — n a crystalline compound OsO4 that is an oxide of osmium, has a poisonous irritating vapor, and is used chiefly as a catalyst, as an oxidizing and hydroxylating agent (as in the conversion of alkenes to glycols), and as a biological fixative and… …   Medical dictionary

  • osmium tetroxide — noun Etymology: International Scientific Vocabulary osmium + tetroxide : a crystalline compound OsO4 that has a poisonous irritating pungent vapor, that is usually made by oxidizing osmium, and that is used chiefly as a catalyst, as an oxidizing… …   Useful english dictionary

  • 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

  • osmium tetroxide — osmic acid a colourless or faintly yellowish compound used to stain fats or as a fixative in the preparation of tissues for microscopical study. Osmium tetroxide evaporates readily, the vapour having a toxic action on the eyes, skin, and… …   The new mediacal dictionary

  • osmium tetroxide — noun an oxide of the metal osmium, OsO; it is very poisonous, has a pungent smell and can cause blindness; it is a powerful oxidizing agent, and is used to stain biological materials …   Wiktionary

  • osmium tetroxide — Chem. a crystalline or amorphous, colorless, poisonous compound, OsO4, soluble in water, alcohol, and ether: used for microscopic staining, in photography, and as a catalyst in organic synthesis. Also called osmic acid. [1875 80] * * * …   Universalium

  • Осмия Тетраоксид (Osmium Tetroxide), Кислота Осмиевая (Osmic Acid) — бесцветное или желтоватое соединение, применяющееся для окрашивания жиров или в качестве фиксирующего вещества в процессе подготовки тканей для микроскопического изучения. Тетраоксид осмия является летучим веществом; его пары оказывают… …   Медицинские термины

  • Osmium dioxide — IUPAC name Osmium dioxide …   Wikipedia

  • Osmium(IV) chloride — IUPAC name Osmium(IV) chloride …   Wikipedia

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