Rhodium(III) Sulfate Solution

Basic Information of Rhodium(III) Sulfate Solution

CAS No.	10489-46-0
EC No.	233-846-1
Chemical Formula	Rh₂(SO₄)₃ (aq.)
Molecular Weight	494.00 g/mol (anhydrous basis)
Appearance	Clear to yellowish-orange liquid (aqueous solution, typically 5–20% Rh w/w)
Odor	Odorless to slight sulfuric
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
Nature (hazards)	Corrosive to metals and skin, causes severe skin burns and eye damage, harmful if swallowed, toxic to aquatic life
RIDADR	UN 3264, Corrosive liquid, acidic, inorganic, n.o.s. (Rhodium(III) sulfate solution), Class 8, Packing Group III
Chemical Structure

Primary Applications of Rhodium(III) Sulfate Solution

Rhodium(III) Sulfate Solution provides a clean, ready-to-use rhodium source for solution processing, enabling precise Rh incorporation in high-technology and catalytic applications.

1. Supported Rhodium Catalyst Impregnation
   Used in wet impregnation of carbon, alumina, silica, or other supports to create high-dispersion Rh catalysts for hydrogenation, hydroformylation, and automotive emission control.

2. Rhodium Electroplating & Surface Finishing
   Provides Rh(III) ions for electrolytic deposition of bright, corrosion-resistant rhodium coatings on electrical contacts, jewelry, and high-reliability electronic components.

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

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

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

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

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

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

• Custom Solution Tailoring
  Adjustable Rh 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 rhodium recycling programs to support global compliance and your ESG commitments.

Hazards Classification

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

• Hazard Statements: H314: Causes severe skin burns and eye damage; H302: Harmful if swallowed; H411: Toxic to aquatic life with long lasting effects

• UN Number: UN 3264

• Hazard Class: 8 (Corrosive substances)

• Packing Group: III