Description
Osmium tetraoxide solution 4 % is a specialised fixative and staining reagent prepared for electron microscopy applications. Based on osmium tetroxide with empirical formula OsO₄, CAS number 20816-12-0 and a molar mass of 254,20 g/mol, the aqueous preparation has a density of 1,01 g/cm³ and a boiling point of 100 °C. Supplied in a 5 ml glass pack, the concentrated solution is intended for careful dilution and use in ultrastructural sample preparation, where it provides strong contrast enhancement of lipids and membranes. This grade from manufacturer Carl ROTH supports fixation and post-staining steps in TEM workflows for cell biology, histology and materials research. EG nr. 244-058-7 identifies the active substance under European chemical inventory rules. Laboratories value the defined 4 % strength for reproducible working solutions when preparing biological specimens for high-resolution imaging. Handle and dispense with appropriate containment practices typical for osmium reagents in the electron-microscopy suite.
This article is part of Reagents for analysis (Ph. Eur., ASTM, DIN), in Analytical standards & reference materials.
Key features
- Assay (OsO4): 4 % in water
- CAS number: 20816-12-0
- Pack size: 5 ml glass
- Empirical formula: OsO₄
- Molar mass: 254,20 g/mol
- Concentration: 4 % solution
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
DangerHazard Statements (H-Phrases)
Precautionary Statements (P-Phrases)
Recently viewed
You may also like
Browse related categories
Category
Analytical standards & reference materials
Sub-category
Reagents for analysis (Ph. Eur., ASTM, DIN)
Catalogue
Brand
Questions about Osmium tetraoxide solution 4 %, for electron microscopy, 5 ml, glass
What is this article?
Osmium tetraoxide solution 4 %, 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.
A reagent for analysis is a chemical whose impurities are limited so they do not become a signal in a titration, a digestion or a photometric method. Pharmacopoeia, ASTM and DIN names point at different limit lists. The grade, not only the identity, is the purchase.
A reference material is the article against which another result is compared. Its value is stated, and the uncertainty of that value is part of the product. An ICP or ion standard is a solution of known concentration. A volumetric standard is for titration. A chromatography standard is the peak you match. The grade names, including pharmacopoeia and ASTM, say which impurities were limited. Identity is checked on PubChem. Names follow IUPAC. Medicinal grades follow the European Pharmacopoeia and USP.
Which category should I open next?
The category is Analytical standards & reference materials. The sub-category is Reagents for analysis (Ph. Eur., ASTM, DIN). The catalogue is Lab chemicals.
Shelves beside this one are ICP, AAS & ion standards, Chromatography standards (GC, HPLC, pesticides), Reference substances & reagents (other), Volumetric standard solutions (titration), Spectroscopy & physical property standards and Indicators & indicator solutions.
What should I check before I order?
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
How does ordering and shipping work?
We deliver across the EU, usually within 2 to 5 working days. More is on Delivery across the EU. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.
