Osmium Tetroxide

CAS: 20816-12-0 · O4Os

2D Structure

Loading 3D structure...

CAS Registry Number

20816-12-0

SMILES

[O].[O].[O].[O].[Os]

InChI Key

VUVGYHUDAICLFK-UHFFFAOYSA-N

InChI

InChI=1S/4O.Os

Comprehensive physical and chemical properties

Property	Value	Source
Molecular Mass	254.23 g/mol	CAS Common Chemistry
	255.94113918 g/mol	RDKit
	254.226 g/mol	RDKit
	265.314 g/mol	chempirical lib
Density	4.90 g/cm³	CAS Common Chemistry
	4.9 g/cm3	CAS Common Chemistry
Wikipedia Url	https://en.wikipedia.org/wiki/Osmium_tetroxide	CAS Common Chemistry
Canonical SMILES	O=[Os](=O)(=O)=O	CAS Common Chemistry
InChI	InChI=1S/4O.Os	CAS Common Chemistry
InChI Key	InChIKey=VUVGYHUDAICLFK-UHFFFAOYSA-N	CAS Common Chemistry
Melting Point	40.6 °C	CAS Common Chemistry
Name	Osmium tetroxide	CAS Common Chemistry
Heavy Atom Count	5	RDKit
Hydrogen Bond Acceptors	0	RDKit
Hydrogen Bond Donors	0	RDKit
Rotatable Bonds	0	RDKit
Aromatic Ring Count	0	RDKit
Topological Polar Surface Area	114.0 Å²	RDKit
LogP	-0.4777	RDKit
Molar Refractivity	2.746 cm³/mol	RDKit
Ring Count	0	RDKit
Formal Charge	0	RDKit
Fraction Csp3	0.0	RDKit
Exact Mass	254.226 g/mol	RDKit
Boiling Point	130.0 °C @ 760 Torr	CAS Common Chemistry

NMR, IR, and Mass spectral data

Predicting NMR spectra...

10 ppm 9 8 7 6 5 4 3 2 1 0 ppm

Shift (ppm)	Multiplicity	Integration	Assignment

200 ppm 180 160 140 120 100 80 60 40 20 0 ppm

Shift (ppm)	DEPT	Assignment

Note: These NMR spectra are predicted computationally and may differ from experimental data. Predictions are based on chemical environment analysis.

Convert

MW = 254.23 g/mol; density = 4.900 g/mL. Edit any field — others recompute live.

Mass (g) Moles (mmol) Moles (mol) Volume (mL)