Tinting strength is an important index for testing the performance of titanium dioxide. It is to mix titanium dioxide with another kind of pigment, and the resulting mixture shows its own pigment ability. Sometimes in order to distinguish between white pigments and colored pigments, the coloring power of coloring power pigments is called tinting power, and the coloring power of white pigments is called decolorizing power. In other words, for a white pigment, after it is mixed with a dark pigment, the lighter the color of the mixture, the stronger its decolorizing power.
At present, there are 4 methods for determining the decoloring power of titanium dioxide, which are visual comparison (reducing power), relative scattering power, Reynolds number (TCS) value, and decoloring power in plastics.
