Skip to Content
Merck

Key Documents

View All Documentation

419494

Osmium tetroxide

ACS reagent, ≥98.0%

Synonym(s):

Osmium(VIII)-oxide, Osmic acid

Sign In to View Organizational & Contract Pricing.

Select a Size

Change View

About This Item

Linear Formula:
OsO4
CAS Number:
20816-12-0
Molecular Weight:
254.23
NACRES:
NB.24
PubChem Substance ID:
329756167
UNSPSC Code:
12352303
EC Number:
244-058-7
MDL number:
MFCD00011150
Assay:
≥98.0%
Grade:
ACS reagent
Form:
crystalline
Solubility:
acetone: soluble(lit.), carbon tetrachloride: soluble(lit.), methyl tert-butyl ether: soluble(lit.), toluene: soluble(lit.), water: soluble(lit.)
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

grade

ACS reagent

Quality Level

200

vapor density

8.8 (vs air)

vapor pressure

7 mmHg ( 20 °C)

description

identification passes test

assay

≥98.0%

form

crystalline

reaction suitability

reagent type: oxidant

clarity of soln

passes test

bp

130 °C (lit.)

mp

39.5-41 °C (lit.)

solubility

acetone: soluble(lit.), carbon tetrachloride: soluble(lit.), methyl tert-butyl ether: soluble(lit.), toluene: soluble(lit.), water: soluble(lit.)

storage temp.

2-8°C

SMILES string

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

InChI

1S/4O.Os

InChI key

VUVGYHUDAICLFK-UHFFFAOYSA-N

Application

Osmium tetroxide may be used in the following processes:
  • As a tissue-staining contrast agent for staining tissues.
  • Lactonization of alkenols to lactones by oxidation.
  • Synthesis of the corresponding tetrols from 1,5-cycloocatdiene by bishydroxylation.

Still not finding the right product?

Explore all of our products under Osmium tetroxide

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

6.1B - Non-combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

It looks like we've run into a problem, but you can still download Certificates of Analysis from our Documents section.

If you need assistance, please contact Customer Support

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

On the Stereoselectivity in Bisdihydroxylation of 1,5-cyclooctadiene with Osmium Tetroxide.
Kawazoe K, et al.
Synthetic Communications, 31(14), 2107-2112 (2001)
P Maupin-Szamier et al.
The Journal of cell biology, 77(3), 837-852 (1978-06-01)
We have studied the destruction of purified muscle actin filaments by osmium tetroxide (OsO4) to develop methods to preserve actin filaments during preparation for electron microscopy. Actin filaments are fragmented during exposure to OsO4. This causes the viscosity of solutions
Direct Lactonization of Alkenols via Osmium Tetroxide-Mediated Oxidative Cleavage.
Schomaker JM, et al.
Organic Letters, 5(17), 3089-3092 (2003)
View All Related Papers