Item name: titanium dioxide
Alias titanium dioxide, titanium sugar, titanium white, titanium oxide
Chemical formula: TiO2
Molecular weight 79.866
CAS No. 13463-67-7
EINECS :236-675-5
Melting point :1840 ℃
Boiling point: 2900 ℃
Water solubility Soluble in hot concentrated sulfuric acid, insoluble in hydrochloric acid and nitric acid.
Density 4.26 g/cm³
Appearance White powder
Flash point 2500 to 3000 ℃
Safety Description S2; S25; S26; S36/37
Hazard symbol Xn
Hazard Description R10; R20/21/22; R36/37/38
Band gap 3.05 eV (rutile)
Main crystal types rutile, anatase, etc.
Refractive index 2.61
Storage condition -20℃
Mohs hardness 6-7, 5.5-6
Capacitance 114~31nF
Coefficient of linear expansion 25/°C
Thermal conductivity 1.809~10.3
Oil absorption 16~48, 18~30
Performance semiconductor
Application areas : paint, paper, ceramics and plastics industry
Industrial applications
Titanium dioxide is an important white pigment and porcelain glaze. It is used in paint, ink, plastic,
rubber, paper, chemical fibre, watercolour pigment and other industries. Titanium dioxide used as
pigment in the world, more than hundreds of thousands of tonnes a year. Titanium dioxide can be
added to paper to make the paper white and opaque, therefore, banknote paper and fine art paper
to add titanium dioxide.
Titanium dioxide is also sometimes added to make plastics lighter in colour and to make rayon softer.
In the rubber industry, titanium dioxide is also used as a filler for white rubber.
Ultrafine titanium dioxide has excellent UV light shielding and transparency.
It is widely used in cosmetics, wood protection, food packaging plastics, durable household films,
synthetic and natural fibres, and transparent coatings. The special optical effect in metal flash coatings
has led to its importance and application in premium car paints.Zhang et al [36] prepared a film
capable of effective UV shielding by adding poly(dopamine)-modified titanium dioxide nanoparticles
into polylactic acid.Hong et al [37] added titanium dioxide nanoparticles to the preparation
of polyurethane microcapsules, and the material's mechanical properties and thermal stability were both
improved and can effectively shield UV radiation and can be used as an exterior coating.Mohr
et al [38] added titanium dioxide to make packaging materials to shield UV radiation on the basis of
ensuring the biodegradability of biofilm.
China
