Description
Osmium tetraoxide, min. 99,95 %, is a high-purity inorganic reagent supplied p.a. for electron microscopy, with CAS number 20816-12-0, EG number 244-058-7, and empirical formula OsO₄. The compound has a molar mass of 254,20 g/mol, a density of 4,9 g/cm³, and a boiling point of 130 °C, supporting well-characterised use in specialised laboratory workflows. It is Available from manufacturer Carl ROTH, this p.a. grade material is intended for demanding microscopy and analytical applications where minimum assay and clear identity data matter. Glass packaging aids controlled handling of the small solid charge at the bench. Laboratories engaged in ultrastructural sample preparation and related electron-microscopy protocols can rely on the stated minimum purity of 99,95 % together with the documented physical constants when specifying this reagent for critical staining and fixation procedures.
This article is part of Organic building blocks & synthesis reagents, in Organic chemicals & synthesis reagents.
Key features
- Appearance: pale yellow crystals
- Assay: ≥99.95 %
- Osmium (Os): 74-76 %
- Aluminium (Al): ≤0.001 %
- Calcium (Ca): ≤0.001 %
- Lead (Pb): ≤0.001 %
- Sodium (Na): ≤0.001 %
- Nickel (Ni): ≤0.001 %
- Non volatile matter: ≤0.02 %
- CAS number: 20816-12-0
- Pack sizes: 100 mg, 500 mg, 1 g
- EG nr.: 244-058-7
- Purity: min. 99,95 %
- 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, min. 99,95 %, p.a. for electron microscopy, 100 mg, glass
What is this article?
Osmium tetraoxide, min. 99,95 %, p.a. for electron microscopy, 100 mg, glass is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Histology reagents & consumables, inside Microscopy & histology, in Lab instruments.
Histology reagents are the fixatives, the solvents, the paraffins and the stains that turn a tissue into a readable section. The stain and the tissue, not the bottle size alone, choose the reagent. Many of these liquids are flammable or toxic and travel under dangerous-goods rules.
A light microscope forms an image with glass lenses and transmitted or reflected light. A stereo microscope is the lower-magnification instrument for dissecting and for looking at a surface. Fluorescence needs a light source and filters matched to the dye. Histology is the preparation that makes a tissue readable: fixation, a cassette, a section, a stain. The objective's magnification and numerical aperture decide the resolution. The slide and the cover glass decide whether the section sits in the focal plane. Stains and dyes as substances are identified on PubChem. Papers on the methods are on PubMed.
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