Iridium Oxide Powder

Updated: 2026-07-15

Overview

Iridium oxide powder (IrO2) is a high-performance inorganic compound known for its exceptional thermal stability and catalytic properties. As a rare and valuable material, it is primarily used in specialized industrial applications, including electrochemical devices and advanced coatings. Its unique combination of conductivity and corrosion resistance makes it indispensable in high-tech sectors. Due to its scarcity and high cost, iridium oxide is typically sourced in small quantities, often for research or high-end manufacturing. The powder form allows for versatile application methods, including deposition and mixing into composite materials.

Physical and Chemical Properties

Iridium oxide powder is characterized by its black color and fine particulate structure. It exhibits high density and stability, with a melting point of approximately 1100°C before decomposition. The material is insoluble in water but can dissolve in aqua regia, a mixture of nitric and hydrochloric acids. Its electrical conductivity is notably high for an oxide, making it a preferred material for electrodes in harsh environments. The powder's catalytic activity is leveraged in processes like oxygen evolution reactions, crucial for water electrolysis and fuel cells.

Main Applications

The primary use of iridium oxide powder is in the production of dimensionally stable anodes (DSAs), which are critical for chlor-alkali processes and electrochemical applications. It is also employed in the manufacture of high-performance sensors and as a catalyst in organic synthesis. In the electronics industry, IrO2 is used to create conductive coatings and thin films, particularly in memory devices and microelectrodes. Its durability under extreme conditions makes it valuable for aerospace and defense applications, such as protective coatings for spacecraft components.

Safety and Storage

Handling iridium oxide powder requires strict safety protocols due to its potential health hazards. Inhalation of fine particles can cause respiratory irritation, and skin contact should be avoided. Always use personal protective equipment (PPE), including gloves and masks, and work in well-ventilated or controlled environments. Storage should be in airtight containers, away from moisture and incompatible substances like acids or reducing agents. Labeling and proper segregation are essential to prevent accidental exposure or reactions.

B2B Procurement Guide

When procuring iridium oxide powder, prioritize suppliers with verifiable certifications and a track record of reliability. Key specifications to confirm include purity (typically 99.9% or higher), particle size distribution, and batch consistency. Due to its high cost, negotiate bulk purchase discounts or explore long-term supply agreements. Consider logistics and storage requirements, as the material may be subject to international trade regulations. Partnering with specialized chemical distributors or direct manufacturers can ensure quality and traceability.