Description
Osmium tetraoxide solution 2 % is a ready-to-use aqueous reagent intended for electron microscopy fixation and staining workflows. The solution corresponds to CAS number 20816-12-0, empirical formula OsO₄, molar mass 254,20 g/mol and EG nr. 244-058-7. Density is given as 1,01 g/cm³ with a boiling point of 100 °C. Supplied as 5 ml in glass, the preparation supports post-fixation contrast enhancement of biological specimens prior to embedding and ultrathin sectioning. Laboratories benefit from a defined 2 % concentration that reduces on-site dilution steps when preparing grids and tissue blocks. Handling remains subject to the usual precautions for osmium compounds; the glass primary pack aids controlled dispensing under a fume hood. Osmium tetraoxide solution 2 % from manufacturer Carl ROTH fits EM core facilities, histology suites and materials-science groups that require consistent OsO₄ staining performance. The compact 5 ml volume matches the small aliquots typically consumed per embedding series, helping laboratories manage inventory of this specialised fixative without excess bulk.
This article is part of Reagents for analysis (Ph. Eur., ASTM, DIN), in Analytical standards & reference materials.
Key features
- Assay (OsO4): 2 % in water
- CAS number: 20816-12-0
- Pack size: 5 ml glass
- EG nr.: 244-058-7
- Empirical formula: OsO₄
- Concentration: 2 % solution
- Molar mass: 254,20 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
DangerHazard Statements (H-Phrases)
Precautionary Statements (P-Phrases)
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Questions about Osmium tetraoxide solution 2 %, for electron microscopy, 5 ml, glass
What is this article?
Osmium tetraoxide solution 2 %, for electron microscopy, 5 ml, glass is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Reagents for analysis (Ph. Eur., ASTM, DIN), inside Analytical standards & reference materials, in Lab chemicals.
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