Saltar al contenido
Merck
Todas las fotos(1)

Key Documents

View All Documentation

O5500

Sigma-Aldrich

Osmium tetroxide

Sealed ampule.

Sinónimos:

Osmium(VIII)-oxide, ‘Osmic acid’

Iniciar sesiónpara Ver la Fijación de precios por contrato y de la organización
Todas las fotos(1)

About This Item

Fórmula lineal:
OsO4
Número de CAS:
20816-12-0
Peso molecular:
254.23
EC Number:
244-058-7
MDL number:
MFCD00011150
UNSPSC Code:
12171500
PubChem Substance ID:
57654490
NACRES:
NA.47

vapor density

8.8 (vs air)

Quality Level

200

vapor pressure

7 mmHg ( 20 °C)

form

powder

reaction suitability

reagent type: oxidant

bp

130 °C (lit.)

mp

39.5-41 °C (lit.)

SMILES string

O=[Os](=O)(=O)=O

InChI

1S/4O.Os

InChI key

VUVGYHUDAICLFK-UHFFFAOYSA-N

¿Está buscando productos similares? Visita Guía de comparación de productos

Categorías relacionadas

General description

Osmium tetroxide (OsO4) is a heavy tetrahedral, symmetrical molecule composed of osmium, a third-row transition metal. Osmium tetroxide is both a dye, and a non-coagulant fixative agent in electron microscopy primarily used for the examination of biological tissue components in the histopathology laboratory. Specimens are postfixed with osmium testroxide to ensure preservation of the lipids.

Application

Osmium tetroxide has been used as a fixative reagent for Brevibacterium mcbrellneri, and curcumin treated human lung cancer cell lines′ observation with a scanning electron microscope. It is also suitable as a fixative for ultrastructural analysis of Toxoplasma gondii′s skeletal muscle cells.

Biochem/physiol Actions

Osmium tetroxide chemically combines with lipids making them insoluble; only 7% of the lipids can be extracted after the fixation. Therefore, the cell membranes comprising phospholipids become black and electron-dense after fixation in osmium tetroxide. It is also used to fix small amount of fat maintained in sections during paraffin processing.

Other Notes

Due to the hazardous nature of osmium tetroxide, it is recommended to use an ampule opener when using this chemical.

Related product

Referencia del producto
Descripción
Precios

pictograms

Skull and crossbonesCorrosion
GHS06,GHS05

signalword

Danger

Hazard Classifications

Acute Tox. 1 Dermal - Acute Tox. 2 Inhalation - Acute Tox. 2 Oral - Eye Dam. 1 - Skin Corr. 1B

Storage Class

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

Certificados de análisis (COA)

Busque Certificados de análisis (COA) introduciendo el número de lote del producto. Los números de lote se encuentran en la etiqueta del producto después de las palabras «Lot» o «Batch»

¿Ya tiene este producto?

Encuentre la documentación para los productos que ha comprado recientemente en la Biblioteca de documentos.

Visite la Librería de documentos

F Wyss et al.
Veterinary pathology, 52(6), 1235-1242 (2015-01-27)
Pododermatitis is frequent in captive flamingos worldwide, but little is known about the associated histopathologic lesions. Involvement of a papillomavirus or herpesvirus has been suspected. Histopathologic evaluation and viral assessment of biopsies from 19 live and 10 dead captive greater
Yukihiko Sugita et al.
The Journal of general virology, 92(Pt 11), 2485-2493 (2011-07-29)
Negatively stained influenza virions sometimes show irregular morphology and are often referred to as pleomorphic. However, this irregular morphology has not been visualized when ultrathin-section transmission and scanning electron microscopies are used. This study focused on the effects of ultracentrifugation
Manuel Marx et al.
Nature protocols, 7(2), 394-407 (2012-02-04)
In this report, we describe a reliable protocol for biocytin labeling of neuronal tissue and diaminobenzidine (DAB)-based processing of brain slices. We describe how to embed tissues in different media and how to subsequently histochemically label the tissues for light
Carsten Købler et al.
Analytical and bioanalytical chemistry, 406(16), 3863-3873 (2014-01-23)
Ultrastructural characterisation is important for understanding carbon nanotube (CNT) toxicity and how the CNTs interact with cells and tissues. The standard method for this involves using transmission electron microscopy (TEM). However, in particular, the sample preparation, using a microtome to
Stephanie J Bissel et al.
Journal of neuropathology and experimental neurology, 74(8), 767-777 (2015-06-27)
Human parechovirus 3 (HPeV3) is a picornavirus associated with neurologic disease in neonates. Human parechovirus 3 infection of preterm and term infants is associated with seizures and destructive periventricular white matter lesions. Despite unremarkable cerebrospinal fluid (CSF), HPeV3 RNA can
Ver todos los artículos relacionados

Nuestro equipo de científicos tiene experiencia en todas las áreas de investigación: Ciencias de la vida, Ciencia de los materiales, Síntesis química, Cromatografía, Analítica y muchas otras.

Póngase en contacto con el Servicio técnico