Rhodium(III) chloride hydrate
Rhodium(III) chloride hydrate (CAS: 20765-98-4) is a hydrated rhodium trichloride compound, with a molecular weight of 209.26 (anhydrous basis). This crystalline, reddish-brown solid is a vital precursor and catalyst in numerous organic synthesis reactions. It is frequently employed in homogeneous catalysis, particularly for hydroformylation, hydrogenation, and carbonylation processes, contributing to the efficient production of various fine chemicals and pharmaceutical intermediates.
- IUPAC
- Rhodium trichloride hydrate
- Synonyms
- Rhodium trichloride hydrate

Homogeneous Catalysis
Rhodium(III) chloride hydrate serves as a key catalyst precursor in various homogeneous catalytic transformations. It is instrumental in processes such as hydroformylation, hydrogenation, and carbonylation, facilitating the synthesis of aldehydes, alcohols, and other valuable organic compounds.
Organic Synthesis
This compound is widely utilized as a reagent and catalyst in complex organic synthesis. Its ability to participate in diverse reaction mechanisms makes it indispensable for the creation of intricate molecular structures found in pharmaceuticals and advanced materials.
Materials Science Research
It finds application in materials science for the preparation of novel rhodium-containing materials and coordination complexes. These materials may exhibit unique electronic, optical, or magnetic properties.
| Molecular weight | 209.26 (anhydrous basis) |
|---|---|
| Linear formula | RhCl3 · xH2O |
| Assay | 99.98% trace metals basis |
| Form | crystalline |
| Composition | Rh, 38-43.5% |
| Melting point | 100 °C (dec.)(lit.) |


Hazard statements
- H302Harmful if swallowed
- H318Causes serious eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-41 |
| Safety statements (S) | 26-36/39 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Rhodium(III) chloride hydrate used for?
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Rhodium(III) chloride hydrate is primarily used as a catalyst precursor in homogeneous catalysis for reactions such as hydroformylation, hydrogenation, and carbonylation, as well as in general organic synthesis and materials science research.
What is the CAS number and chemical formula for Rhodium(III) chloride hydrate?
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The CAS number is 20765-98-4. The linear formula is RhCl₃ · xH₂O.
What grade and purity does Tech Serve Solutions supply for Rhodium(III) chloride hydrate?
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Tech Serve Solutions supplies Rhodium(III) chloride hydrate with an assay of 99.98% trace metals basis. We do not represent this product as USP, BP, EP, or pharmacopoeia grade.
What are the safety considerations when handling Rhodium(III) chloride hydrate?
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Rhodium(III) chloride hydrate is harmful if swallowed (H302) and causes serious eye damage (H318). It requires appropriate personal protective equipment, including a dust mask (type N95 US), eyeshields, and gloves. Handle in a well-ventilated area and avoid dust formation.
How is Rhodium(III) chloride hydrate packed and exported by Tech Serve Solutions?
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Rhodium(III) chloride hydrate is carefully packed and exported by Tech Serve Solutions to meet international shipping regulations, ensuring safe and compliant delivery to our global clientele.
How can I request a quote or sample of Rhodium(III) chloride hydrate?
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To request a quote or sample of Rhodium(III) chloride hydrate, please contact our sales department via the website or by phone, providing your details and requirements.
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