水すい性せい

noun which may take the genitive case particle 'no'

water-based; aqueous

Describes products, solutions, or substances that use water as the primary solvent or medium. Common in everyday contexts like paints, inks, and cosmetics.

• このペンキは水すい性せいだから、水みずで洗あらい流ながせる。

  This paint is water-based, so you can wash it off with water.

• 水すい性せいのインクを使つかっているので、服ふくについても落おちやすい。

  Because it uses water-based ink, it comes out easily even if it gets on your clothes.

noun which may take the genitive case particle 'no'

water-soluble

Specifically refers to substances that dissolve in water. Often used in scientific or technical descriptions, and cross-referenced with 水溶性.

See also: 水溶性

• このビタミンは水すい性せいなので、水みずに溶とかして飲のめる。

  This vitamin is water-soluble, so you can dissolve it in water and drink it.