Description

Rhodium Trihydroxide is a valuable inorganic compound of the platinum group metal rhodium. This material serves as a critical precursor and catalyst component in advanced chemical synthesis and materials science. It is essential for researchers and manufacturers in the electronics, catalysis, and specialty chemical sectors seeking high-purity rhodium intermediates.

Application

• Catalyst Precursor: A key starting material for synthesizing homogeneous and heterogeneous rhodium-based catalysts used in hydrogenation, hydroformylation, and carbonylation reactions.
• Electroplating: Used in the formulation of specialized rhodium plating baths for depositing highly reflective, corrosion-resistant, and hard coatings on electrical contacts and jewelry.
• Chemical Synthesis: Employed as an intermediate in the production of other organorhodium compounds and coordination complexes for research and industrial processes.
• Ceramic & Glass Coloring: Acts as a precursor for producing pink-colored glasses and high-temperature ceramic pigments.
• Sensor Technology: Investigated for use in the development of chemical sensors and conductive films due to its electrochemical properties.
• Fuel Cell Research: Studied as a component in electrode materials and catalysts for next-generation energy conversion devices.

Basic Information

Product Name	Rhodium Trihydroxide
CAS No.	21656-02-0
Molecular Formula	Rh(OH)3 or Rh2O3·3H2O
Molecular Weight	153.93 g/mol (anhydrous Rh(OH)3 basis)
Synonyms	Rhodium(3+) trihydroxide; Rhodium(III) hydroxide; Rhodium hydroxide (Rh(OH)3); Rhodium sesquioxide trihydrate; Rhodium oxide hydrate; Rhodium oxide hydroxide; Rhodium hydrate
EINECS	244-499-7

Quality Control

Our Rhodium Trihydroxide is produced and handled under strict quality management protocols. Each batch is analyzed to ensure it meets high-purity standards suitable for catalytic and electronic applications. A comprehensive Certificate of Analysis (COA) detailing purity, metal content, and impurity profiles is provided with every shipment to guarantee traceability and performance consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and should be kept under inert conditions to prevent decomposition.

Specification

Item	Specification
Appearance	Brown to dark brown powder or amorphous solid
Identification (IR/XRD)	Conforms to standard
Assay (as Rh)	≥ 65.0 %
Purity (Rh(OH)3 basis)	≥ 98.0 %
Insoluble Matter	≤ 0.5 %
Chloride (Cl)	≤ 0.1 %
Sulfate (SO4)	≤ 0.1 %
Other Platinum Group Metals	≤ 0.5 % (Total)
Base Metals (Fe, Ni, Cu, Pb)	≤ 0.1 % (Total)

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.