What are some physical properties of icing sugar?

Icing sugar, also known as powdered sugar or confectioners' sugar, has a fine, granular texture and a white color, giving it a smooth appearance. It is highly soluble in water, allowing it to dissolve easily in various recipes. Additionally, it has a low moisture content, which helps prevent clumping, and its light weight means it can easily form a dusting or coating on baked goods. Its fine particles also contribute to its ability to create a smooth frosting or glaze when mixed with liquids.