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Ruthenium(III) chloride is the chemical compound with the formula RuCl3. "Ruthenium(III) chloride" more commonly refers to the hydrate RuCl3.xH2O. Both the anhydrous and hydrated species are dark brown or black solids.
R 1375 (OTTO) Ruthenium trichloride Cas no 13815-94-6 - used starting material in ruthenium chemistry.