Barium Sulfate Precipitation

概要

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.

参加者

日常の例

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

産業上の重要性

BaSO₄は放射線造影剤、塗料の白色顔料(ブランフィックス)、石油掘削泥水、プラスチックや紙の充填剤として使用されています。