Rhodium(III) Iodide

GTC-566

Rhodium Compounds

Rhodium(III) Iodide

CAS No.
15492-38-3
Catalogue ID
GTC-566

Rhodium(III) Iodide, CAS 15492-38-3. Source-derived identification, physical data and applications are provided for catalogue reference; request the current specification, COA and SDS for the required grade.

Catalogue aliases / related identifiers

Rhodium triiodide; Rhodium triiodide anhydrous; Rhodium(+3) iodide; Rhodium(3+) iodide; Trichlororhodium (incorrectly used synonymously in some databases); Rhodium iodide RhI₃

Supplied catalogue source: GTC-566 · Page 78

Reference data — confirm before ordering or use

The information below is a structured migration from the supplied catalogue snapshot. It is not a current product specification, COA or SDS. Confirm the actual supplier, grade, batch documents, classification, packing and destination requirements for your enquiry.


Basic Information of Rhodium(III) Iodide

CAS No.15492-38-3
EC No.239-532-7
Chemical FormulaRhI₃
Molecular Weight483.62 g/mol
AppearanceDark black to violet-black crystalline powder
OdorOdorless
Melting pointDecomposes before melting (>300 °C)
Boiling pointNot applicable (decomposes)
Densityapprox. 5.0–5.5 g/cm³
SolubilityInsoluble in water; soluble in acetonitrile, DMF, DMSO, hot concentrated acids
Nature (hazards)Causes severe skin burns and eye damage, may cause allergic skin reaction, harmful if swallowed, toxic to aquatic life
RIDADRUN 3260, Corrosive solid, acidic, inorganic, n.o.s. (Rhodium(III) iodide), Class 8, Packing Group III
Chemical Structure


Molecular Structure of Rhodium(III) Iodide


Primary Applications of Rhodium(III) Iodide

Rhodium(III) Iodide serves as a specialized Rh(III) precursor, offering unique iodide-promoted reactivity for selective catalytic and synthetic processes.

  1. Organometallic Rhodium Complex Synthesis
    Acts as starting material for preparing iodide-containing Rh complexes and clusters, valuable in mechanistic studies and ligand exchange reactions.

  2. Iodide-Promoted Hydrogenation Catalysis
    Used to generate Rh catalysts with enhanced activity in selective hydrogenation of alkenes, alkynes, and carbonyls, particularly in iodide-assisted systems.

  3. Hydroformylation & Carbonylation
    Serves as precursor for rhodium catalysts in hydroformylation and related carbonylation processes, providing iodide-modified selectivity in oxo-alcohol production.

  4. C–H Activation & Functionalization
    Facilitates Rh-catalyzed C–H arylation, borylation, and annulation with iodide ligands enhancing reactivity toward challenging substrates.

  5. Supported Rhodium Catalyst Preparation
    Employed in impregnation to deposit iodide-promoted Rh on carbon or oxide supports for heterogeneous hydrogenation and reforming catalysis.

  6. Advanced Materials & Electrocatalysis
    Supports preparation of Rh-based electrocatalysts or functional materials where iodide coordination influences electronic properties.


  • High Rhodium Content Consistency
    Rigorous analytical controls guarantee accurate Rh assay, minimal impurities, and batch-to-batch reproducibility for dependable precursor performance.

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

  • Technical Catalysis Support
    Experienced specialists offer advice on complex formation, iodide-assisted activation, reaction optimization, and scale-up tailored to your processes.

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

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


Hazards Classification

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

  • Hazard Statements: H314: Causes severe skin burns and eye damage; H317: May cause an allergic skin reaction; H302: Harmful if swallowed; H411: Toxic to aquatic life with long lasting effects

  • UN Number: UN 3260

  • Hazard Class: 8 (Corrosive substances)

  • Packing Group: III

GHS05
GHS05: Corrosive
GHS07
GHS07: Exclamation mark (sensitizer, acute toxicity)
GHS09
GHS09: Environment (aquatic toxicity)
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  • 02Batch or sample COA
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