Osmium
Tetroxide to Papanicolaou
Osmium Tetroxide

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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
Osmium Purity: >99.95%
Non-Volatile matter: <0.02%
Small size (2ml), 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.
Please call us for special prices on all other quantities and package sizes.
Aqueous Solution:
To facilitate your work, we now have available a complete line of Osmium Tetroxide Aqueous Solutions with various concentrations. Sealed under dry nitrogen. Prepared in our plant daily. Exact concentrations and volume in pre-scored amber-ampoules.
4%
Aqueous Solution:
2% Aqueous Solution
Special orders are encouraged for different solution concentrations and packaging requirements.
Technical Tips
Neutralization and Disposal of Osmium Tetroxide
Making and Air Tight Container for Osmium Tetroxide

Papanicolaou Stain, OG-6
| RT | 26048-05 | OG-6 Stain Solution | 500ml | 39.00 | Add to Cart |
| RT | 26048-06 | OG-6 Stain Solution | 1 L | 51.00 | Add to Cart |

Papanicolaou Stain, EA-50 (EA Counterstain)
| RT | 26049-05 | EA-50 Stain Solution | 500ml | 48.00 | Add to Cart |
| RT | 26049-06 | EA-50 Stain Solution | 1 L | 85.00 | Add to Cart |









