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oxid osmičelý
Subject h. oxid osmičelý Subject h. Osmium Tetroxide English X references Osmic Acid Scope note in English (T-4)-Osmium oxide (OsO4). A highly toxic and volatile oxide of osmium used in industry as an oxidizing agent. It is also used as a histological fixative and stain and as a synovectomy agent in arthritic joints. Its vapor can cause eye, skin, and lung damage. 
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