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Tetrossido di osmio 4% in soluzione acquosa, Sigma-Aldrich®

Fornitore: SIGMA-ALDRICH MICROSCOPY
Pericolo

Synonyms: Osmio (VIII) ossido, Osmio tetrossido

M-Clarity™ quality level = MQ100

75632-10ML 75632-5ML
75632-10MLEA 449 EUR
75632-10ML 75632-5ML
Tetrossido di osmio 4% in soluzione acquosa, Sigma-Aldrich®
Tetrossido di osmio

Osmium tetroxide is also referred to as osmium and is mainly used as a secondary fixative of tissues. The molecule reacts with lipid moieties and is responsible for the oxidation of unsaturated bonds of fatty acids. This reaction adds density and contrast to biological samples. In normal tissues, presence of osmium results in intense black staining which can be viewed by normal eye. In addition, it can be used as a mordant (a molecule which combines with stain or dye at later stages) in electron microscopy, thereby enhancing lead staining.


Osmium tetroxide solution has been used as a fixative in scanning and transmission electron microscopy.

Formula: O₄Os
Peso molecolare: 254,23 g/mol
Densità: 1,0 g/ml at 20 °C
Temperatura di stoccaggio: Refrigerata
MDL Number: MFCD00011150
CAS Number: 20816-12-0
EINECS: 244-058-7
UN: 3287
ADR: 6.1,II
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Risultati del test di specificazione

Assay 4.0% OsO₄ in water

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