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Acide osmique 4% en solution aqueuse, Sigma-Aldrich®

Marques : SIGMA ALDRICH MICROSCOPY
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Synonyme(s): Osmium (VIII) oxyde, Tétraoxyde d'osmium

M-Clarity™ (Niveau de Qualité) = MQ100

75632-10ML 75632-5ML
75632-10MLEA 468 EUR
75632-10ML 75632-5ML
Acide osmique 4% en solution aqueuse, Sigma-Aldrich®
Acide osmique

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.

Formule: O₄Os
Poids moléculaire: 254.23 g/mol
Point d'ébullition: 130
Point de fusion: 40
Densité: 1,0 g/ml at 20 °C
Température de stockage: Réfrigérateur
Numéro MDL: MFCD00011150
Numéro CAS: 20816-12-0
EINECS: 244-058-7
UN: 3287
ADR: 6.1 II
Indice Merck: 13,06962
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Résultats des tests de spécification

Assay 4.0% OsO₄ in water


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