Which pigment provides the best hiding effect in coatings?

Rutile Titanium Dioxide is known for its exceptional hiding power, which is a critical property in coatings. This pigment achieves a high level of opacity, meaning it can effectively conceal the underlying surface or previous colors. The ability to provide a strong hiding effect is largely due to its high refractive index, which allows it to scatter light more efficiently than other pigments. This scattering capability means that even a thin layer of paint containing rutile titanium dioxide can hide the surface underneath, making it a preferred choice for many applications, particularly where uniform color and finish are desired.

In contrast, the other types of pigments mentioned do not match the hiding effectiveness of rutile titanium dioxide. Inhibitive pigments serve a different purpose, acting to prevent corrosion rather than providing coverage. Extender pigments are used to reduce costs and modify properties such as texture but do not enhance hiding power significantly. Organic pigments can offer vibrant colors but often sacrifice opacity in comparison to rutile titanium dioxide, making them less suitable for applications requiring the best hiding effect. Therefore, rutile titanium dioxide stands out as the best choice for achieving superior hiding in coatings.