Safety Statements: Poison by ingestion, inhalation, skin contact, intravenous, and subcutaneous routes. Can cause narcosis and central nervous system depression. Prolonged exposure can cause encephalopathy similar to that of organic lead compounds. Flammable when exposed to heat or flame; can react with oxidizing materials. Spontaneously flammable in air. Explodes at 110°C. Upon decomposition it emits toxic fumes of Bi. See also BISMUTH COMPOUNDS.