SPI-CHEM™ Osmium Tetroxide
Technical Data Sheet
Also listed as: Osmic acid, osmic anhydride
Chemical Formula: OsO4
Uses: Tissue fixative and selective tissue stain in preparation for
electron microscopic examination. Also used for the staining of certain
plastics and phases in certain plastics. Catalyzes chlorate oxidations.
Strong oxidizing agent and catalyst. Conversion of olefins to glycols,
steroid synthesis, etc. and is also used as the osmium "source" for the OPC
line of osmium plasma coaters manufactured by Nippon Laser and Electronics,
Nagoya, Japan.
Physical and Chemical Data:
Chemical Mol. % Appearance Specific Purity*
Name Wt. Os Gravity %
Osmium 254.20 74.82 Colorless monoclinic 4.9 99.995
Tetroxide
Appearance: Solid crystals - yellow crystalline mass
Softening Point: 35° C/95° F
Boiling Point: 130° C/266° F - Begins to sublime and distill well
below the boiling point.
Solubilities (g/100 ml solvent):
Cold Water Hot Water CCl4
5.07 6.23 250
Soluble in alcohol or ethyl ether with decomposition.
Caution:
Osmium tetroxide vapors are poisonous and highly irritating to the skin,
eyes, and respiratory membranes. Minimum perceptible concentration
0.02 mg/liter of air. Become familiar with the
information on the MSDS for this material before attempting its use.
There is no perceptible amount of insoluble reside when dissolved in
CCl4, nonvolatile matter is less than USP
requirements, and heavy metals are not more than the equivalent of
0.005% Pb.
The product transcends the requirements of USP, ACS, and Department of
Defense, Defense Medical Supply No. 6 standards. Packing also complies
with all appropriate standards.
* Internal and independent analyses have confirmed the above % purity on
standard batch runs.
The information, based upon literature and our testing and manufacturing
experience, is intended for use by persons having technical skill and
training, at their own discretion and risk. It is not a guarantee of an end
product or research or manufacture, and we assume no liability to that end.
The information is not intended as a recommendation to use any compound
involving the infringement of any patent nor does the sale of any compound
grant or imply immunity under any patent.
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Sunday September 07, 2008
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