Physically Titanium Dioxide Pigments are found in
white powder form. High obscurity is present in these pigment powder.
These pigment powders have very good whiteness, very high covering
capacity, and good retardation capacity.
Due to these properties, the titanium dioxide pigments have a wide
range of application and are considered valuable. These pigments are
used in manufacturing of ink, plastic goods, paper, paints etc.
|Modulus of Rupture
|Dielectric Constant(1 MHz)
|Micro Hardness(HVO .5)
|Resistivity(25 degree C)
||10 to the power 12 ohm.cm
|Resistivity( 700 degree C)
||2.5*10 to the power 4 ohm.cm
|Dissipation Factor(1 M Hz)
||5*/10 to the power 4
|Thermal expansion(RT-1000 degree C)
||9*/10 to the power 6
|Thermal Conductivity(25 degree C)
|Modulus of Electicity
||4 gm/meter cube
As sintered titanium has relatively poor mechanical
properties, so its applications are constrained. But, it is used for a
number of electrical applications. Titania is widely used as a pigment.
As a pigment, it is used in powder form to exploit its optical
The most common form of titanium dioxide as pigment
substance is its powder form. As a pigment, it provides whiteness and
opacity to paints and coatings, plastics, paper, inks, food, cosmetic
and fibers. The most common form of titanium dioxide as a pigment is
white pigment. This is because, it is very white and very high
refractive index. The bright whiteness and high refractive index of
titanium dioxide make it to become as an effective opacifier for
pigments. It is also used as an opacifier in cosmetics, sunscreen,
paper, paints etc.
There are two processes of manufacturing Titanium
Dioxide Pigments. These two processes are:
Sulphate Process is the first process that was used to convert ilmenite
into titanium dioxide. Some sulphate process plants have been built to
produce a very big quantity of waste iron sulfate and to manufacture low
quality products for most of the applications. Through the process, the
pigments produced are called anatase
. These pigments are used
mainly used in the paper industry, ceramics and inks manufacturing.
In chlorine process, the chlorine reacts to synthetic rutile and form
volatile titanium tetrachloride. Later on, this is oxidized to obtain
iron chloride and other impurities. To produce 5-6 tonnes of titanium
dioxide pigments, about one tonne of chlorine is needed. Chlorine
process has been separated into another subprocess that is called
This process requires to get processed from ilmenite into rutile form.
It means to remove the iron components to obtain crude titanium dioxide
that is also called synthetic rutile. Generally. To manufacture 1 tonne
of Titanium dioxide pigments, 1.6 tonne synthetic rutile is required.