metal soap

Machine-translated from the German article

Metal soaps are salts of fatty acids as well as salts of resin acids and naphthenic acids with metals, excluding the sodium and potassium salts. The water-soluble fatty acid salts of sodium and potassium are called sodium or potassium soaps and are described there. Metal soaps are poorly soluble in water but readily soluble in organic solvents such as benzene or fatty oils.