カリ石せっ鹸けん

noun

potash soap

A soft or liquid soap made from potassium hydroxide (potash), as opposed to hard sodium soaps. A technical term used in chemistry, manufacturing, and traditional crafts.

• カリ石せっ鹸けんは、カリウム塩えんを使つかった柔やわらかい石せっ鹸けんです。