Osmium Tetroxide, 1g and under

Osmium Tetroxide, Crystalline, Highest Purity, 99.95% (Osmic Acid Anhydride) OsO4   F.W. 254.20   CAS #20816-12-0 Melting Range : 39.5-41.0?C Boiling Point : 129.7?C Vapor Pressure @25?C: 9.8 mmHg Solubility: 5.07% in Cold Water; 6.5% in Hot Water; 25.0% in CCl4 Non-Volatile matter: <0.02% 

Osmium is a highly toxic, volatile solid, crystalised compound.  It is colourless but almost appears yellow.  
 
Small size (2 ml), Light-gauge, pre-scored amber glass ampoules. Ampoules containing OsO4 Crystal, are pre-cleaned and heat sealed in plastic bags to assure a contaminant-free solution. Ampoules are also free of pressure-sensitive labels and, therefore, do not require cleaning prior to solution preparation. 

Aqueous Solutions are sealed under dry nitrogen with exact concentrations and volume in pre-scored amber-ampoules. 

Applications: 
Many uses, most commonly a post-fixative in EM.   

Storage:  
Store at room temperature 

We ship osmium with full-cream milk powder, in case of breakage. Full-cream milk powder will inactivate osmium tetroxide's toxic vapours and is less messy than corn oil

 
User Notes 

See All Osmium Tetroxide   

C010 and C012 - Safety Data Sheet