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| OsO4; [20816-12-0]; FW 254.20 Solid vaporizes by sublimation. Should be used only under the hood. Affects eyes. Use eye protection. EM Grade, glass ampoules in black paper. No sticky labels. Osmium purity >99.95%. Light sensitive. |
Special note on handling Osmium Tetroxide （reference 5, appendices A:2.5, "Books" , Procedures in Electron Microscopy） "Great care must be taken with osmium tetroxide. The crystals melt at 40°C and are extremely slow to dissolve in water. Both the crystals and diluted aqueous solutions give off fumes of osmium tetroxide, even at 0°C. It has an extremely low TLV （0.0002ppm）. Osmium fixatives must therefore always be handled in a fume hood （cupboard）, and because they act so rapidly, skin contact must be avoided at all times." TLV= Eight hour average Threshold Limit Value measured in milligrams per cubic meter of air. |
Prod # | Description | Unit |
18459 | Osmium Tetroxide, 4% aqueous, 10 x 2ml | each |
18466 | Osmium Tetroxide, 2% aqueous, 10 x 5ml | each |
18463 | Osmium Tetroxide, 4% aqueous, 10 x 5ml | each |
18465 | Osmium Tetroxide, 4% aqueous, 10 x 10ml | each |
18450 | Osmium Tetroxide, 1/4 gram crystal, pkg/10 | each |
18451 | Osmium Tetroxide, 1/2 gram crystal | each |
18456 | Osmium Tetroxide, 1 gram crystal | each |
