10049-07-7

Toxic by ingestion.

Rhodium trichloride is used in hydro- silylation, hydrogenation, carbonylation, oxidation, aryla- tion. See also “Rhodium Metal.” In plating operations and in catalyst preparation, the metal will be used as the trichloride.

Move victim to fresh air. Call 911 or emergency medical service. Give artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; give artificial respira- tion with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush skin or eyes with run- ning water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin. Keep victim warm and quiet. Effects of exposure (inhalation, ingestion, or skin contact) to substance may be delayed. Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves. Medical obser- vation is recommended for 24 to 48 hours after breathing overexposure, as pulmonary edema may be delayed. As first aid for pulmonary edema, a doctor or authorized para- medic may consider administering a drug or other inhala- tion therapy.

UN3260 Corrosive solid, acidic, inorganic, n.o.s., Hazard class: 8; Labels: 8-Corrosive material, Technical Name Required.

Sensitive to humidity. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materi- als, strong bases, strong acids, oxoacids, and epoxides.

Rhodium trichloride is a red-brown or black,odorless solid or liquid. Molecular weight = 209.26; 263.32(trihydrate); Boiling point = 775℃ (sublimes); Freezing/Melting point = 400-500℃(decomposition). HazardIdentification (based on NFPA-704 M Rating System):Health 3, Flammability 0, Reactivity 1. Insoluble in water.Rhodium trichloride trihydrate, RhCl3 - xH2O, is a deep-redcrystalline solid. Soluble in water.

black crystalline powder

Rhodium trichloride is a red-brown or black, odorless solid or liquid

Recovery and reclaiming wherever possible in view of high economic value. See “Rhodium Metal.”

Brownish-red powder; deliquescent; decomposes on heating at 450 to 500°C; sublimes at 800°C; insoluble in water, water-solubility, however, depends on the method of preparation; soluble in alkali hydroxide or cyanide solutions; soluble in aqua regia
The trihydrate is a dark red powder; deliquescent; loses water at 100°C; very soluble in water; soluble in alcohol and hydrochloric acid; insoluble in ether.

Rhodium(III) chloride precursor may be used to dope graphene with Rh nanoparticles to prepare hybrids for electrocatalysis in energy, sensing and biomedical sectors. It can be used to prepare [Rh(NH3)6]Cl3.

Rhodium trichloride is prepared by heating rhodium with chlorine gas at 250°C:
2Rh + 3Cl₂ → 2RhCl₃
Also, the chloride salt may be obtained by treating the yellow hydrous oxide, Rh₂O₃?5H₂O, with hydrochloric acid. The solution is carefully evaporated to form a dark red and water-soluble salt, rhodium trichloride tetrahydrate, RhCl₃?4H₂O. Heating the tetrahydrate in a stream of hydrogen chloride gas at 180°C forms the anhydrous salt, RhCl₃.

Catalyst in conjunction with "pybox" for the asymmetric hydrosilylation of ketones.
C-C bond forming reactions.

Color Code—White: Corrosive or ContactHazard; Store separately in a corrosion-resistant location.Prior to working with this chemical you should be trainedon its proper handling and storage. Store in tightly closedcontainers in a cool, well-ventilated area away from strongoxidizers. Where possible, automatically transfer materialfrom drums or other storage containers to processcontainers.

Probable impurities are KCl and HCl. Wash the chloride well with small volumes of H2O to remove excess KCl and KOH and dissolve it in the minimum volume of conc HCl. Evaporate it to dryness on a steam bath to give wine-red coloured RhCl3.3H2O. Leave it on the steam bath until the odour of HCl is lost-do not try to dry further as it begins to decompose above 100o to the oxide and HCl. It is not soluble in H2O but soluble in alkalis or CN solutions and forms double salts with alkali chlorides. [Anderson & Basolo Inorg Synth VII 214 1963.]