Osmium tetroxide solution

SIGALD/251755 - 4 wt. % in H₂O

CAS Number: 20816-12-0
Empirical Formula (Hill Notation): O₄Os
Molecular Weight: 254.23
MDL Number: MFCD00011150
Linear Formula: OsO₄
Product Type: Chemical

Catalog Number	PKG Qty.	Price


45-251755-2ML	2 mL	$126.00 1/EA	Add To Favorites
45-251755-5ML	5 mL	$190.00 1/EA	Add To Favorites
45-251755-10ML	10 mL	$323.00 1/EA	Add To Favorites

Properties
Descriptions
Safety Info.
Basic Data

concentration	3.5-4.5% (OsO₄)
	4 wt. % in H₂O
density	1.0 g/mL at 20 °C
	1.04 g/mL at 25 °C
form	liquid
InChI	1S/4O.Os
InChI key	VUVGYHUDAICLFK-UHFFFAOYSA-N
Quality Level	100
reaction suitability	reagent type: oxidant
SMILES string	O=[Os](=O)(=O)=O
storage temp.	2-8°C
vapor pressure	1.23 psi ( 20 °C)
	3.55 psi ( 55 °C)

Application:

In situ X-ray-assisted electron microscopy staining for large biological samples.: This study explores the use of osmium tetroxide solution for X-ray-assisted electron microscopy staining, enhancing the visualization of large biological samples (Ströh et al., 2022 ).

Application of the electron microscope to the cytochemical peroxidase reaction in salamander leukocytes.: The use of osmium tetroxide solution in electron microscopy enhances the cytochemical analysis of peroxidase reactions in salamander leukocytes, providing clear and detailed images (MITSUI, 1960 ).

General description:

OsO₄ (4wt% in H₂O) is widely employed in organic synthesis especially for hydroxylation reactions. Additionally, it is also involved in the oxidative cleavage of alkenes.

Symbol	GHS05,GHS06
Signal word	Danger
Hazard statements	H302 + H332 - H310 - H315 - H318
Precautionary statements	P262 - P280 - P301 + P312 - P302 + P352 + P310 - P304 + P340 + P312 - P305 + P351 + P338
Hazard Codes	T
Risk Statements	23/24/25
Safety Statements	36/37-45
RIDADR	UN 3287 6.1 / PGII
WGK Germany	WGK 1
Flash Point(F)	Not applicable
Flash Point(C)	Not applicable

Density	1.0 g/mL at 20 °C; 1.04 g/mL at 25 °C
Storage Temp.	2-8°C
UNSPSC	12352300

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