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What are physical properties of titanium dioxide?

1. Relative density

Relative density of titanium dioxide is related to its crystal shape, particle size, chemical constituent, especially to the size of surface treatment.

Relative density would increase with raise of calcination temperature and prolongation of calcining time.

Among frequently-used white paints, the relative density of titanium dioxide is the smallest.

2. Melting point and boiling point

The melting point is related to the purity of titanium dioxide. According to recorded data, the melting point in air is 1830℃± 15℃ and the melting point in rich oxygen is 1879℃± 15℃.

3. Dielectric constant

Since dielectric constant of titanium dioxide is higher, so titanium dioxide has excellent electric properties.

4. Electrical conductivity

Titanium dioxide possesses semiconductor’s performance. Its electrical conductivity would rapidly increase with increasing temperature. At the same time, titanium dioxide is very sensitive to oxygen deficit.

5. Hardness

The hardness is related to the crystal structure of titanium dioxide. In production, the hardness is related to the purity and calcination temperature of titanium dioxide. Titanium dioxide can be easily sintered at high temperature and its hardness would subsequently increase.

6. Hygroscopicity

Although titanium dioxide possesses hydrophily, the hygroscopicity is not very strong.

7. Thermal stability

Titanium dioxide belongs to compound with good thermal stability.

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