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206237

Sigma-Aldrich

Iridium(IV) oxide

99.9% trace metals basis

Synonym(s):

Iridium dioxide

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About This Item

Linear Formula:
IrO2
CAS Number:
12030-49-8
Molecular Weight:
224.22
EC Number:
234-743-9
MDL number:
MFCD00011065
UNSPSC Code:
12352303
eCl@ss:
38191204
PubChem Substance ID:
24852387
NACRES:
NA.23

Quality Level

100

Assay

99.9% trace metals basis

form

powder

application(s)

battery manufacturing

SMILES string

O=[Ir]=O

InChI

1S/Ir.2O

InChI key

HTXDPTMKBJXEOW-UHFFFAOYSA-N

General description

Iridium oxide is a ceramic material with unique properties like long-term stability, sensitivity, electrochemical catalytic activity, and excellent biocompatibility. It can be formed from Ir metal by different methods like thermal decomposition, reactive sputtering, and electrochemical deposition. It is widely used in bio-electronic devices.

Application

Iridium(IV) oxide can be used as:
  • An indicator electrode in solid-state pH sensors.
  • Coating material for stimulation electrodes.
  • An anodic catalyst for oxygen evolution through a water-splitting reaction in a polymer electrolyte membrane (PEM) cell.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

JAN Code

206237-5G:
206237-1G:
206237-VAR:
206237-BULK:

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Certificates of Analysis (COA)

Lot/Batch Number
MKCN5758
MKCN5756
MKCK0059
MKCJ2306
MKCC2768

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H B Campbell et al.
Biosensors & bioelectronics, 42, 563-569 (2012-12-25)
The primary goal of this work is the development of a rapidly responding, sensitive, and biocompatible Ir oxide (IrOx)-based glucose sensor that regenerates solely via IrOx-mediation in both O₂-free and aerobic environments. An important discovery is that, for films composed
Martin Han et al.
IEEE transactions on bio-medical engineering, 59(2), 346-354 (2011-10-25)
We developed and validated silicon-based neural probes for neural stimulating and recording in long-term implantation in the brain. The probes combine the deep reactive ion etching process and mechanical shaping of their tip region, yielding a mechanically sturdy shank with
Shawn K Kelly et al.
IEEE transactions on bio-medical engineering, 58(11), 3197-3205 (2011-08-24)
A miniaturized, hermetically encased, wirelessly operated retinal prosthesis has been developed for preclinical studies in the Yucatan minipig, and includes several design improvements over our previously reported device. The prosthesis attaches conformally to the outside of the eye and electrically
Vanessa M Tolosa et al.
Biosensors & bioelectronics, 42, 256-260 (2012-12-05)
An implantable micromachined multi-electrode array (MEA) microprobe modified for utilization as a complete electrochemical biosensor for rapid glutamate detection is described. A post-fabrication method for electrochemical deposition of an iridium oxide (IrOx) film onto a designated microelectrode enabled incorporation of
JingYan Nian et al.
The journal of physical chemistry. A, 115(40), 11023-11032 (2011-09-03)
The mechanisms of the reactions between N(2)O and CO catalyzed by IrO(n)(+) (n = 1, 2) have been investigated using B3LYP and CCSD(T) levels of theory. Spin inversion among three reaction profiles corresponding to the quintet, triplet, and singlet multiplicities
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