Osmium Tetroxide
Osmium Tetroxide, Crystalline, Highest Purity, 99.95%
(Osmic Acid Anhydride)
OsO4Â Â F.W. 254.20 Â 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%
Small size (2 ml), Light-gauge, pre-scored amber glass ampoules. Ampoules containing OsO4Â 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.
Osmium is a highly toxic, volitile solid, crystalised compound. Â It is colourless but almost appears yellow.Â
Aqueous Solutions are sealed under dry nitrogen with exact concentrations and volume in pre-scored amber-ampoules.
Applications:
It has many uses with most common being a post-fixative in EM.Â

Code | Title | Option 1 | Option 2 | Option 3 | Availability | Price | |
---|---|---|---|---|---|---|---|
EMS80074-OS | Osmium single standard (DG) | Each | leadtime:4-6 weeks | AU $572.00 | |||
C010 | Osmium Tetroxide, 1g and under | 1g ampoule | Each | In Stock | AU $73.00 | ||
C010-02510 | Osmium Tetroxide, 1g and under | 0.25g ampoule | Pack/10 | 2 weeks | AU $224.00 | ||
C010-05 | Osmium Tetroxide, 1g and under | 0.5g ampoule | Each | 2 weeks | AU $65.00 | ||
C010-0510 | Osmium Tetroxide, 1g and under | 0.5g ampoule | Pack/10 | 2 weeks | AU $421.00 | ||
C010-0550 | Osmium Tetroxide, 1g and under | 0.5g ampoule | Pack/50 | 2 weeks | Quote only | Quote | |
C010-1010 | Osmium Tetroxide, 1g and under | 1g ampoule | Pack/10 | Only 2 | AU $523.00 | ||
C010-120 | Osmium Tetroxide, 1g and under | 1g ampoule | Pack/20 | 2 weeks | AU $1,174.00 | ||
C010-130 | Osmium Tetroxide, 1g and under | 1g ampoule | Pack/30 | Only 3 | AU $1,715.00 | ||
C010-140 | Osmium Tetroxide, 1g and under | 1g ampoule | Pack/40 | 2 weeks | Quote only | Quote | |
C010-150 | Osmium Tetroxide, 1g and under | 1g ampoule | Pack/50 | 2 weeks | Quote only | Quote | |
C012 | Osmium Tetroxide, 1g and under | 0.1g ampoule | Each | In Stock | AU $23.00 | ||
C011 | Osmium tetroxide 4% aqueous solution (DG) | 10mL | In Stock | AU $59.00 | |||
C011-1010 | Osmium tetroxide 4% aqueous solution (DG) | 10x10ml | Only 2 | AU $347.00 | |||
C011-1050 | Osmium tetroxide 4% aqueous solution (DG) | 50x10ml | leadtime:4-6 weeks | AU $1,817.00 | |||
C011-2 | Osmium tetroxide 4% aqueous solution (DG) | 2mL | leadtime:4-6 weeks | AU $30.00 | |||
C011-210 | Osmium tetroxide 4% aqueous solution (DG) | 10x2ml | Only 2 | AU $122.00 | |||
C011-250 | Osmium tetroxide 4% aqueous solution (DG) | 50x2ml | leadtime:4-6 weeks | AU $566.00 | |||
C011-5 | Osmium tetroxide 4% aqueous solution (DG) | 5mL | leadtime:4-6 weeks | AU $44.00 | |||
C011-510 | Osmium tetroxide 4% aqueous solution (DG) | 10x5ml | leadtime:4-6 weeks | AU $280.00 | |||
C011-550 | Osmium tetroxide 4% aqueous solution (DG) | 50x5ml | leadtime:4-6 weeks | AU $1,275.00 | |||
EMS19112 | Osmium Tetroxide, over 1g (DG) | 2g ampoule | pack/5 | leadtime:4-6 weeks | AU $672.00 | ||
EMS19114 | Osmium Tetroxide, over 1g (DG) | 4g ampoule | pack/5 | leadtime:4-6 weeks | AU $1,115.00 | ||
EMS19115 | Osmium Tetroxide, over 1g (DG) | 5g ampoule | Each | leadtime:4-6 weeks | AU $315.00 | ||
EMS19116 | Osmium Tetroxide, over 1g (DG) | 6g ampoule | Each | leadtime:4-6 weeks | AU $371.00 | ||
EMS19152 | Osmium tetroxide 2% aqueous solution (DG) | 10x2mL | leadtime:4-6 weeks | AU $108.00 | |||
EMS19153 | Osmium tetroxide 2% aqueous solution (DG) | 50x2ml | leadtime:4-6 weeks | AU $468.00 | |||
EMS19172 | Osmium tetroxide 2% aqueous solution (DG) | 10x5mL | leadtime:4-6 weeks | AU $170.00 | |||
EMS19173 | Osmium tetroxide 2% aqueous solution (DG) | 50x5ml | leadtime:4-6 weeks | AU $760.00 | |||
EMS19192 | Osmium tetroxide 2% aqueous solution (DG) | 10x10mL | leadtime:4-6 weeks | AU $226.00 | |||
EMS19193 | Osmium tetroxide 2% aqueous solution (DG) | 50x10ml | leadtime:4-6 weeks | AU $1,129.00 |