Rhodium(III) oxide, CAS 12036-35-0

Rhodium(III) oxide Rh₂O₃ is an inorganic compound of rhodium in the +3 oxidation state, CAS 12036-35-0.

Substance identification

The formula Rh₂O₃ and CAS 12036-35-0 correspond to rhodium(III) oxide. The calculated Rh content is about 81.09%, so the requirement of not less than 80% is consistent with the substance. Color and particle size may depend on preparation and heat treatment; black-gray powder is specified per historical TU, and parameters of a specific batch are confirmed by documents.

Confirmed characteristics

• CAS: 12036-35-0
• Formula: Rh₂O₃
• Molar mass: about 253.81 g/mol
• Rhodium: not less than 80% per TU 6-09-05-1428-90
• Item number: 5162709

Applications and preparation

Rhodium(III) oxide is used as a starting material in research synthesis of rhodium compounds, catalytic compositions, and materials science. Reactivity depends on surface area, crystallinity, impurities, and calcination conditions.

Weigh the sample based on the actual Rh content. For dissolution or reduction, use only a validated procedure with control of temperature and gaseous products. If surface area is important, additionally measure particle size and BET; if stoichiometry is important, confirm the phase. For analysis, a separate certified rhodium standard is required.

What to confirm before ordering

Specify CAS 12036-35-0, Rh₂O₃, minimum Rh content, particle size, and allowable impurities. Request CoA, SDS, and if necessary XRD, BET, and loss on drying data. Agree on pack size and container material. For catalytic applications, set limits for chlorine, alkali metals, and other platinum group metals.

Safe handling

Avoid inhalation of powder and contact with eyes or skin. Work in a fume hood or closed system, use safety glasses, gloves, and respiratory protection per SDS and risk assessment. Heating and reduction should be carried out in equipment with atmosphere control. Collect residues, filters, and contaminated containers separately for rhodium-containing waste disposal.