Titanium Dioxide

Titanium Dioxide (TIO₂)

Titanium dioxide is the most widely used white pigment because of its brightness and very high refractive index, in which it is surpassed only by a few other materials. TiO2 is also an effective opacifier in powder form, where it is employed as a pigment to provide whiteness and opacity to products such as paints, coatings, plastics, papers, inks, foods, medicines (i.e. pills and tablets) as well as most toothpastes. In paint, it is often referred to offhandedly as “brilliant white”, “the perfect white”, “the whitest white”, or other similar terms. Opacity is improved by optimal sizing of the titanium dioxide particles.

ItemIndexResult
TiO2 content % ≥92.093.2
whiteness(compared to St. sample)no less thanno less than
Color CIE Lightness ≥98.598.7
Color b value ≤1.41.36
rutile content /% ≥98.599
Tint strength /% ≥20002020
105ºC moisture ,% ≤0.50.37
Soluble in water,% ≤0.50.29
oil absorption g/100g ≤2018
PH value6.0-8.57.3
Resistance Ω·m ≥8090
Residue(325mesh),% ≤0.050.01