Rhodium (III) Chloride Hydrate

Rhodium (III) Chloride Hydrate

CAS number: 20765-98-4

Chemical formula: RhCl3 • nH2O

Metal content: 37.0—40.0%

Application: precursor of rhodium compounds and materials containing rhodium. Catalyst of cyclobutene polymerization; catalyst of unsaturated compounds isomerization.

Shelf life: 3 years.


  • dark glass ampoules; and
  • dark glass jars.

Safety Data Sheet

Material Safety Certificate

Articles on the use of the compound:

1     2

IndicatorsTrial Data Results
Appearance Crystalline powder of brown colour with violet tint and metallic lustre
Mass fraction of rhodium (Rh), %, min. 37.0—40.0
Solubility in water Transparent solution
Solubility in alcohol Transparent solution
Mass fraction of admixtures in relation to rhodium, %, max.:  
platinum, palladium, iridium, ruthenium, silver, copper (each) 0.002
lead 0.001
gold 0.0005
iron, nickel, silicon (each) 0.005
calcium 0.010
magnesium 0.0015