Iridium Nitrate Solution CAS 18496-38-3

High-Purity Iridium Nitrate Solution from Aure Chemical – Your Trusted Source

Iridium nitrate solution, Ir(NO₃)₃ in aqueous form, CAS No. 18496-38-3, is a convenient, halide-free iridium(III) precursor widely used in catalysis preparation and surface finishing. Supplied by Aure Chemical as a clear to pale yellow or greenish liquid with iridium concentrations typically ranging from 5–20% Ir (w/w), this stable solution offers excellent solubility and clean decomposition characteristics. It serves as an efficient Ir source for wet impregnation of supported iridium catalysts on carbon, alumina, or silica, thin-film deposition (spin-coating, dip-coating), preparation of organometallic iridium complexes, and iridium electroplating baths for high-reliability electronic components. The nitrate-based formulation eliminates chloride contamination risks, making it ideal for high-purity applications in electronics, fuel cells, and fine chemical catalysis. Aure Chemical provides precise Ir content control, low impurity profiles, and secure iridium sourcing to ensure reproducible results in industrial and laboratory settings worldwide.

Basic Information of Iridium Nitrate Solution

Aure Chemical delivers Iridium Nitrate Solution as a high-quality aqueous Ir(III) precursor optimized for deposition, impregnation, and synthesis, available in commercial Ir concentrations with verified composition.

CAS No.	18496-38-3
EC No.	242-409-6
Chemical Formula	Ir(NO₃)₃ (aq.)
Molecular Weight	352.24 g/mol (anhydrous basis)
Appearance	Clear to pale yellow or greenish liquid (aqueous solution, typically 5–20% Ir w/w)
Odor	Odorless to slight nitric
Melting point	Not applicable (liquid solution)
Boiling point	>100 °C (water-based; decomposes on heating)
Density	1.05–1.40 g/mL at 25 °C (concentration-dependent)
Solubility	Miscible with water; soluble in alcohols, acetone, acetonitrile
Nature (hazards)	Oxidizing liquid, may intensify fire, causes skin and eye irritation, harmful if swallowed, toxic to aquatic life
RIDADR	UN 3099, Oxidizing liquid, corrosive, n.o.s. (Iridium nitrate solution), Class 5.1 (8), Packing Group III
Chemical Structure

Aure Chemical offers customizable Ir concentrations (e.g., 5%, 10%, 15%, 20% Ir w/w), adjusted acidity, and specialized packaging to align with your deposition, catalyst, or synthesis process specifications.

Primary Applications of Iridium Nitrate Solution

Iridium Nitrate Solution provides a clean, ready-to-use iridium source for solution processing, enabling precise Ir incorporation in high-technology and catalytic applications.

1. Supported Iridium Catalyst Impregnation
   Used in wet impregnation of carbon, alumina, silica, or other supports to create high-dispersion Ir catalysts for hydrogenation, ammonia oxidation, and fuel cell applications.

2. Iridium Electroplating & Surface Finishing
   Provides Ir(III) ions for electrolytic deposition of bright, corrosion-resistant iridium coatings on electrical contacts, spark plugs, and high-reliability electronic components.

3. Thin-Film Iridium Deposition
   Ideal for spin-coating, dip-coating, or ink formulations to produce iridium electrodes, seed layers, or catalytic films in microelectronics and sensors.

4. Organometallic Iridium Complex Synthesis
   Acts as a halide-free Ir(III) precursor for preparing phosphine, carbene, or amine Ir complexes used in homogeneous catalysis and materials research.

5. Electrocatalyst Development for Energy Applications
   Enables synthesis of Ir-based electrocatalysts for oxygen evolution reaction (OER), hydrogen evolution, and alcohol oxidation in electrolyzers and fuel cells.

6. Advanced Materials & Nanotechnology
   Facilitates controlled reduction to generate iridium nanostructures, functional coatings, or supported clusters requiring high purity and controlled Ir loading.

Why Choose Aure Chemical for Your Iridium Nitrate Solution Supply?

Trust Aure Chemical for Iridium Nitrate Solution, combining premium quality, flexible customization, and expert precious metal support for your advanced iridium applications.

• Accurate & Consistent Ir Concentration
  Precise analytical control ensures uniform iridium content, low impurities, and batch reproducibility for reliable deposition or catalytic performance.

• Halide-Free Formulation
  Nitrate-based solution eliminates chloride risks, ideal for electronics, fuel cells, and processes demanding ultra-high purity iridium.

• Custom Solution Tailoring
  Adjustable Ir levels, concentration ranges, and minor additives to perfectly match your specific process or formulation requirements.

• Technical Process Support
  Dedicated specialists provide advice on solution handling, deposition techniques, catalyst activation, and optimization for maximum efficiency.

• Regulatory & Sustainability Focus
  Full COA, REACH, RoHS, SDS documentation and iridium recycling programs to support global compliance and your ESG commitments.

Hazards Classification

• GHS Classification: Oxidizing Liquids (Category 2 or 3); Acute Toxicity, Oral (Category 4); Skin Corrosion/Irritation (Category 1B or 2); Serious Eye Damage (Category 1); Aquatic Chronic (Category 2 or 3)

• Hazard Statements: H272: May intensify fire; oxidizer; H302: Harmful if swallowed; H314 or H315: Causes severe skin burns or irritation; H318: Causes serious eye damage; H411: Toxic to aquatic life with long lasting effects

• UN Number: UN 3099

• Hazard Class: 5.1 (Oxidizing substances) + 8 (Corrosive)

• Packing Group: III