1.04119

Oxyde d′osmium(VIII)

for microscopy

• Synonyme(s) : Osmium(VIII) oxide
• Formule empirique (notation de Hill): O₄Os
• Numéro CAS: 20816-12-0
• Poids moléculaire : 254.23
• Numéro MDL: MFCD00011150
• Code UNSPSC : 12352303

Propriétés

• Pression de vapeur: 10 hPa ( 20 °C)
• Niveau de qualité: 200
• Puissance: 15 mg/kg LD₅₀, oral (Rat)
• Couleur: yellow
• pH: 6 (20 °C, 25 g/L in H₂O)
• Point d'ébullition: 130 °C/1013 hPa
• Pf: 40 °C (decomposition)
• Solubilité: 65 g/L
• Densité: 4.91 g/cm³ at 20 °C
• Masse volumique apparente: 1500 kg/m³
• Application(s): diagnostic assay manufacturing; hematology; histology
• Température de stockage: 15-25°C
• InChI: 1S/4O.Os
• Clé InChI: VUVGYHUDAICLFK-UHFFFAOYSA-N

Description

Description générale

Osmium tetroxide for microscopy can be used to visualize unsaturated lipids. A part of the lipids is immediately blackened by the influence of osmic acid solution. The immediate black coloration results from the -C=C- double bond of the unsaturated fatty acid. The fatty acids that are made brownish at first can be blackened by treatment with 60-70% alcohol. For electron microscopy or semithin sectioning the glutardialdehyde-fixed specimens are post-fixed with osmium(VIII) oxide. Lipid inclusions appear black on a yellow to brown background.

Application

for microscopy

Remarque sur l'analyse

Identity (Raman-spectrum): conforms

Informations sur la sécurité

• Pictogrammes: GHS05,GHS06
• Mention d'avertissement: Danger
• Mentions de danger: H300 + H310 + H330 - H314
• Conseils de prudence: P260 - P271 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Classification des risques: Acute Tox. 1 Dermal - Acute Tox. 2 Inhalation - Acute Tox. 2 Oral - Eye Dam. 1 - Skin Corr. 1B
• Code de la classe de stockage: 6.1B - Non-combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials
• Classe de danger pour l'eau (WGK): WGK 1
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable