Osmium Tetroxide Poisoning

Methyl bromide poisoning Osmium tetroxide poisoning Phosgene poisoning Ricin poisoning Smallpox... [Pg.440]

Methyl bromide poisoning Methyl isocyanate poisoning Omsk hemorrhagic fever Osmium tetroxide poisoning Pertussis... [Pg.471]

Osmium tetroxide poisoning, 367-370 Phosphine poisoning, 375-379 Radiation poisoning, 380-383 Ricin poisoning, 384-387 Salmonellosis, 199-202 Shigellosis, 206-209... [Pg.487]

The reagent Is expensive and poisonous, consequently the hydroxylation procedure is employed only for the conversion of rare or expensive alkenes (e.g., in the steroid field) into the glycols. Another method for hydroxylation utilises catalytic amounts of osmium tetroxide rather than the stoichiometric quantity the reagent is hydrogen peroxide in tert.-butyl alcohol This reagent converts, for example, cyc/ohexene into cis 1 2- t/ohexanedlol. [Pg.894]

Osmium tetroxide is poisonous by all routes of exposure. The vapor is an... [Pg.673]

Detection.—Metallic osmium is characterised by its volatility at white heat without liquefaction, and by the production of volatile and excessively poisonous osmium tetroxide upon ignition of the finely divided metal in air or oxygen. The same vapour is evolved when any osmium compound is heated with concentrated nitric acid. [Pg.337]

Shock-sensitive, detonable compounds (such as sodium azide, dry picric acid) or extremely poisonous materials (such as cyanides, osmium tetroxide, cacodylic acid, tetrodotoxin, picrotoxin, ricin) should be stored in locked cabinets. DEA-regulated substances (e.g., pentobarbital, phenobarbital)... [Pg.280]

Osmium tetroxide vapors are poisonous and result in damage to the respiratory tract and temporary damage to the eyes. 351 Use OSO4 powder only in a well-ventilated hood with extreme caution. [Pg.248]

Osmium tetroxide fixative 2% (w/v) OSO4 in 0 12M sodium phosphate, pH 7 2 (Take care poisonous ). [Pg.36]

CAUTION Osmium tetroxide, 0s04, a volatile, extremely poisonous substance, is formed from almost any osmium compound under acid conditions in the presence of air. Reaction with corn oil or powdered milk will destroy it... [Pg.169]

Caution. Osmium tetroxide, OsG, is a severe poison and must be handled in a well-ventilated hood. [Pg.238]

Poisons Cyanide, osmium tetroxide, phosphorus, sodium azide Arsenic compounds, phosphorus, osmium tetroxide... [Pg.168]

Ruthenium tetroxide dissolves to a slight extent in water. It is also soluble in caustic alkali, from which solutions a black precipitate of finely divided ruthenium is obtained on addition of alcohol.2 Both the aqueous solution and the pure substance itself possess an odour resembling that of ozone. Its vapour, however, is not poisonous like that of the corresponding tetroxide of osmium. In contact with alcohol the solid tetroxide is reduced with explosive violence.3-4 When covered with water, to which a concentrated solution of caesium chloride is subsequently added and a little hydrochloric acid, ruthenium tetroxide is gradually converted into the oxy-salt, Cs2Ru02CI4. The corresponding rubidium salt has likewise been prepared.3... [Pg.147]

Chemical Properties.— Osmium oxidises when heated in air. The oxidation of the powdered metal begins at temperatures below 212° C. in air, and below 170° C. in oxygen,10 volatile vapours of the tetroxide, Os04, being evolved. These vapours are intensely poisonous, producing temporary blindness and other unpleasant symptoms.5 Osmium is also oxidised when heated in steam. It is readily dissolved by... [Pg.209]

Oxidation of alkenes with osmium(Vin) tetroxide (OSO4) (Chapter 6, Scheme 6.10) involves a cyclic intermediate and results in the addition of two hydroxyl groups to the same face [d5-, syn-, (Z)- or suprafacial] of the reacting double bond. However, it is usually desirable to avoid stoichiometric concentrations of expensive, heavy metal poisons. Therefore, the observation that catalytic quantities of osmium(Vni) tetroxide (OSO4) could effectively be used in the presence of a less noxious oxidizing agent (the N-oxide of N-methylmorpholine, NMO) was particularly important. The function of the latter then is to convert the osmium(VI) trioxide (OsOs), produced when the osmium(VIII) tetroxide is reduced (as it performs the oxidation), back to osmiiun(Vni) tetroxide (OSO4), that is,... [Pg.608]

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