Anatase titanium dioxide physicochemical properties

Physical Properties
In the commonly used white pigment, titanium dioxide anatase relative density of the smallest. Anatase at high temperatures will be transformed into rutile, anatase

titanium dioxide thus melting and boiling points are actually non-existent. Anatase type titanium dioxide is relatively low dielectric constant, only 48. Anatase

titanium dioxide Mohs hardness of 5.5 to 6.0, so in order to avoid fiber matting and the use of orifice wear tio2 anatase . A titanium dioxide is better, but the coloring

strength of only 70% of R-type, the weatherability test join the A-type titanium dioxide film after only one year later began cracking or peeling fragmented, while

adding R-type titania Specimen After ten years later only a small change in its appearance. Since R-type titanium dioxide tinting strength and weather resistance,

better use of R-type plastics coloring titanium dioxide as well.
Chemical properties
Anatase titanium dioxide chemically extremely stable, is an acidic amphoteric oxide. At room temperature and almost no compound with other elements, oxygen, ammonia,

nitrogen, hydrogen sulfide, carbon dioxide, sulfur dioxide, does not work, do not dissolve in water, fat, nor soluble in dilute acid and inorganic acids, bases, only

the dissolved hydrogen hydrofluoric acid. However, under the action of the light, titanium dioxide can occur continuously redox reactions, with photochemical activity.

This via photochemical activity, ultraviolet irradiation anatase titanium dioxide is particularly evident, even though some of the properties of titanium dioxide

oxidation catalyst photosensitive inorganic compounds, and certain organic photosensitive reduction catalyst