鉛えん丹たん

noun

red lead; minium; lead(II,IV) oxide

A bright red or orange-red lead oxide used historically as a pigment and in rust-proof paints. Technical term in chemistry.

• 鉛えん丹たんは、かつて防ぼう錆せい塗と料りょうの顔がん料りょうとして広ひろく使つかわれていた。

  Red lead was once widely used as a pigment in anti-corrosion paints.

• 化か学がくの授じゅ業ぎょうで、鉛えん丹たんの化か学がく式しきはPb₃O₄だと習ならった。

  In chemistry class, I learned that the chemical formula of red lead is Pb₃O₄.