Osmic acid s. Osmium

Osmic acid s. Osmium tetroxide Osmium tetroxide OC CC Oxa... s. a. O-Heterocyclics 3-Oxabicyclo[3.1.0]bexanes... 

Orthophosphoric acid s. Phosphoric acid Osmic acid s. Osmium tetroxidc Osmium tetroxide OCnI CC ... 

Orthophosphoric acid esters, alkylation with - 22, 775 Orthosilicates s. Silicates Osmic acid s. Osmium tetroxide Osmium tetroxide OCv >CC Oxa... s. a. 0-Heterocyclics Oxacyclimmonium salts, 2-hydroxy- 22, 990, 3,5-Oxadiazines, 6-oxo-... 

OSA n-OSA. See Octenylsuccinic anhydride OSBP. See o-s-Buty I phenol Osimol DR, Osimol SF. See Sulfonic acid OS/ Specialties LE-45 Series. See Polydimethylsiloxane Osmic acid. See Osmium tetroxide Osmium... 

Flowever, some associated materials might be perceived as toxic. For example, complexes of osmium find frequent use as electron mediators, because of their rich chemistry, stability, and redox activity. Osmium metal and most compounds are considered nontoxic, but the neat tetroxide of osmium is a strong oxidizer and is considered highly toxic in the U.S. and very toxic by the European Union. On the other hand, the aqueous solution, osmic acid, has been injected at 1% concentration in several European clinical trials, starting in the 1970s, for treatment of arthritis and hemophilia. - No toxic effects were observed. Thus, osmium toxicity might be a question not of in vivo chemistry, but of manufacture, where a concentrated form of the oxide might need to be handled. ... 

A number of complexes of p-chlorodithiobenzoate (S F Cl- L) have been claimed, involving osmium(III) and osmium(IV) OsL3 was isolated.721 There is also Os(SOsCl6H8 )2 2H20, a complex of 5,5 -thiodisalicylic acid, made from the ligand and osmic acid , and which has a magnetic moment of 1.35 BM at room temperature.722... 

---