水溶性

1. Origins, structure, and basic meaning

• Structure: 水溶性 (すいようせい) is the property of dissolving in water. It appears predicatively and with attributive の.
• Basic usage: Paint can be diluted because it is water-soluble; a water-soluble component dissolves into hot water.

2. Common pitfalls and similar expressions

• Dilutability of a product and dissolution of a component
  • なので links the paint property as a reason; 水溶性の成分 classifies the component. The term is solubility in water, not water itself.