Thiourea bitter, soluble in water and alcohol. Part can isomerization melted to form ammonium thiocyanate. Easy to form an addition compound with a metal salt. Dissolved in 11 parts of water, ethanol and ammonium thiocyanate solution, slightly soluble in ether. The solution was neutral. Moderate toxicity, the median lethal dose (rat, oral) 125mg / kg. Have carcinogenic potential. Used as a reducing agent. Lead, thallium, cadmium precipitant. Characterization and determination of bismuth, hungry, ruthenium, selenium, lead, tellurium, palladium and selenite. Organic Synthesis, by preparing thiol alkyl halide.