Barium Sulfate Precipitation

概述

Barium chloride reacts with sodium sulfate to form an extremely insoluble white precipitate of barium sulfate (Ksp = 1.1 × 10⁻¹⁰). BaSO₄ is so insoluble that it is safe to ingest for medical imaging despite barium's toxicity. The precipitate forms instantly as a dense, finely divided white solid.

参与者

日常示例

Barium sulfate is the white liquid (barium meal) patients drink before gastrointestinal X-rays to make the digestive tract visible.

工业重要性

BaSO₄用作放射造影剂、油漆白色颜料(永固白)、油井钻井泥浆,以及塑料和纸张的填料。