Iridium dioxide Chemical Properties

Melting point:

1100°C (dec.)

Density 

11,7 g/cm³

storage temp. 

under inert gas (nitrogen or Argon) at 2-8°C

form 

Powder

Specific Gravity

11.66

color 

Black

Water Solubility 

INSOLUBLE

Crystal Structure

Rutile type

crystal system

square

Space group

P42/mnm

Lattice constant

a/nm	b/nm	c/nm	α/o	β/o	γ/o	V/nm3
0.45051	0.45051	0.31586	90	90	90	0.0641

InChI

InChI=1S/Ir.2O

InChIKey

HTXDPTMKBJXEOW-UHFFFAOYSA-N

SMILES

[Ir](=O)=O

CAS DataBase Reference

12030-49-8(CAS DataBase Reference)

NIST Chemistry Reference

Iridium dioxide(12030-49-8)

EPA Substance Registry System

Iridium oxide (IrO2) (12030-49-8)

Safety Information

Hazard Codes 

O;Xi,Xi,O

Risk Statements 

36/38-8

Safety Statements 

17-26-37/39

WGK Germany 

3

TSCA 

Yes

HazardClass 

5.1

HS Code 

28259085

MSDS

• Language:English Provider:Iridium(IV) oxide
• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS
• Language:English Provider:ALFA

Iridium dioxide Usage And Synthesis

Chemical Properties

BLACK POWDER

Uses

Iridium(IV) oxide is used in the coating of anode-electrodes for industrial electrolysis in association with other rare oxides. It is also used in microelectrodes for electrophysiology research.

Iridium dioxide(12030-49-8)Related Product Information

• ETHYLENE OXIDE
• Calcium hydroxide
• Quartz
• Magnesium oxide
• Thiourea dioxide
• Rutile
• Boron oxide
• Carbon dioxide
• Stannic oxide
• Zirconium dioxide
• Iron oxide
• Iridium
• Calcium oxide
• Niobium oxide
• Zinc oxide
• NITRIC OXIDE
• Lithium acetoacetate
• Yttrium oxide