Barium Sulfate

**Semantic type:** Indicator, Reagent, or Diagnostic Aid|Inorganic Chemical

**Definition:** The sulfate salt of barium, an alkaline, divalent metal. Barium sulfate is quite insoluble in water, and is used as a radiopaque agent to diagnose gastrointestinal medical conditions. Barium sulfate is taken by mouth or given rectally. (NCI04)

**Synonyms:** - BARIUM SULFATE