Rhodium(III) Acetate

Basic Information of Rhodium Acetate

CAS No.	42204-14-8
EC No.	255-192-9
Chemical Formula	Ru(CH₃COO)₃
Molecular Weight	309.24 g/mol (anhydrous basis)
Appearance	Dark brown to black powder or hydrated solid
Odor	Slight acetic acid-like
Melting point	Decomposes before melting (>200 °C)
Boiling point	Not applicable (decomposes)
Density	approx. 2.0–2.2 g/cm³
Solubility	Soluble in water, alcohols, acetic acid; moderately soluble in acetone
Nature (hazards)	Causes skin and eye irritation, may cause allergic skin reaction, harmful if swallowed or inhaled, toxic to aquatic life
RIDADR	UN 3077, Environmentally hazardous substance, solid, n.o.s. (Rhodium acetate), Class 9, Packing Group III
Chemical Structure

Primary Applications of Rhodium Acetate

Rhodium Acetate serves as a reactive Rh(III) precursor, readily convertible to active rhodium species for catalytic and materials processes.

1. Homogeneous Hydroformylation Catalysis
   Acts as a precursor for Rh-based hydroformylation catalysts, enabling efficient conversion of alkenes to aldehydes in oxo-alcohol production and specialty chemicals.

2. Supported Rhodium Catalyst Preparation
   Used in impregnation or precipitation to deposit Rh on carbon, alumina, silica, or oxide supports, yielding active hydrogenation and reforming catalysts for fine chemicals.

3. C–H Activation & Functionalization
   Facilitates Rh-catalyzed direct C–H arylation, borylation, and annulation reactions, providing atom-economical routes to functionalized molecules in drug discovery.

4. Thin-Film & Coating Deposition
   Serves as a solution-based Rh source for depositing rhodium or rhodium oxide films via spin-coating or electrodeposition in microelectronics and sensors.

5. Organometallic Complex Synthesis
   Enables preparation of mixed-ligand Rh complexes for mechanistic studies, luminescent materials, and functional organometallics in academic and industrial R&D.

6. Electrocatalysis & Energy Applications
   Supports synthesis of Rh-based electrocatalysts for oxygen reduction reaction (ORR) and hydrogen evolution in fuel cells and electrolyzers.

• Consistent Rhodium Content & Purity
  Precise analytical verification ensures uniform Rh content, low residual impurities, and batch reproducibility for reliable precursor performance.

• Secure Precious Metal Sourcing
  Transparent, responsible rhodium procurement with inventory buffering to provide supply stability and competitive pricing.

• Technical Application Support
  Experienced specialists offer guidance on dissolution, reduction protocols, catalyst activation, and process optimization tailored to your applications.

• Full Regulatory Compliance
  Comprehensive COA, REACH, RoHS, and detailed SDS documentation to facilitate global operations and audits.

• Sustainability & Recycling Commitment
  Ethical sourcing practices and rhodium recovery/recycling programs aligned with ESG objectives and circular economy principles.

Hazards Classification

• GHS Classification: Skin Irritation (Category 2); Eye Irritation (Category 2A); Specific Target Organ Toxicity, Single Exposure (respiratory) (Category 3); Aquatic Chronic (Category 3)

• Hazard Statements: H315: Causes skin irritation; H319: Causes serious eye irritation; H335: May cause respiratory irritation; H413: May cause long lasting harmful effects to aquatic life

• UN Number: UN 3077

• Hazard Class: 9 (Miscellaneous dangerous substances and articles)

• Packing Group: III