white amorphous powder.it specific gravity is 4.965(15°C),decopposes at 415°C,easilly dissolves in acid,not dissolove in water or queous alkali,easily shws jelly a molecular of water and becomes yellow bismuth hydroxide[bi(oh)]at100 °C usage:common reagent.apply for making bismuth salt .hydrolyze absorbent rna for rutin and quercetin,separate plutonium from uranium under irradiation.