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20816-12-0 - Osmium(VIII) oxide, 99.8% (metals basis), Os 74.4% min - Osmic acid - Osmium tetroxide - 12103 - Alfa Aesar

12103 Osmium(VIII) oxide, 99.8% (metals basis), Os 74.4% min

CAS Number
20816-12-0
Synonyms
Osmic acid
Osmium tetroxide

Size Price ($) Quantity Availability
0.5g 90.70
1g 150.15
*10x1g 980.80
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Osmium(VIII) oxide, 99.8% (metals basis), Os 74.4% min

MDL
MFCD00011150
EINECS
244-058-7

Chemical Properties

Formula
OsO4
Formula Weight
254.10
Form
Crystalline
Melting point
40.6°
Boiling Point
130°
Solubility
Soluble in chloroform, alcohol and ethers.Soluble in water, organic solvents, benzene, alcohol, ether, ammonium hydroxide, phosphorus oxychloride and carbon tetrachloride.

Applications

Oxidation, catalyst in Sharpless dihydroxylations Osmium(VIII) oxide is used in the Sharpless oxyamination to give vicinal amino-alcohols. It is used to oxidize alkenes to the vicinal diols. It acts as a staining agent used in transmission electron microscopy to provide contrast to the image and as a stain for lipids in optical microscopy. As a polymer stain, it is also used to stain selectively copolymers especially styrene-butadiene block copolymers. Further, it is involved in the synthesis of Isosteviol.

Notes

Special handling precautions required. View MSDS prior to purchase. MSDS are available online at www.alfa.com.Store in a cool place.Incompatible with strong acids, hydrogen chloride, organic materials and finely powdered metals.

Literature References

Gally, C.; Nestl, B. M.; Hauer, B. Engineering Rieske Non-Heme Iron Oxygenases for the Asymmetric Dihydroxylation of Alkenes. Angew. Chem. Int. Ed. 2015, 54 (44), 12952-12956.

Cheng, W.; Kumar, J. N.; Zhang, Y.; Liu, Y. pH-and redox-responsive self-assembly of amphiphilic hyperbranched poly(amido amine)s for controlled doxorubicin delivery. Biomater. Sci. 2015, 3 (4), 597-607.

GHS Hazard and Precautionary Statements

Hazard Statements: H300-H310-H330-H314

Fatal if swallowed. Fatal in contact with skin. Fatal if inhaled. Causes severe skin burns and eye damage.

Precautionary Statements: P260-P301+P310-P303+P361+P353-P304+P340-P305+P351+P338-P320-P330-P361-P405-P501a

Do not breathe dust/fume/gas/mist/vapours/spray. IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Specific treatment is urgent (see label). Rinse mouth. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Other References

Merck
14,6893
Hazard Class
6.1
Packing Group
I
Harmonized Tariff Code
2843.90
TSCA
Yes

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