Basic Info.
Titanium dioxide occurs in nature as the well-known minerals rutile, anatase and brookite, and additionally as two high pressure forms, a monoclinic baddeleyite-like form and an orthorhombic α-PbO2-like form, both found recently at the Ries crater in Bavaria.
Titanium dioxide has eight modifications – in addition to rutile, anatase, and brookite, three metastable phases can be produced synthetically (monoclinic, tetragonal and orthorombic), and five high-pressure forms (α-PbO2-like, baddeleyite-like, cotunnite-like, orthorhombic OI, and cubic phases) also exist:
| Form |
Crystal
system
|
Synthesis |
| rutile |
tetragonal |
|
| anatase |
tetragonal |
|
| brookite |
orthorhombic |
|
| TiO2(B)[12] |
monoclinic |
Hydrolysis of K2Ti4O9 followed by heating |
| TiO2(H), hollandite-like form[13] |
tetragonal |
Oxidation of the related potassium titanate bronze, K0.25TiO2 |
| TiO2(R), ramsdellite-like form[14] |
orthorhombic |
Oxidation of the related lithium titanate bronze Li0.5TiO2 |
| TiO2(II)-(α-PbO2-like form)[15] |
orthorhombic |
|
| akaogiite (baddeleyite-like form, 7 coordinated Ti)[16] |
monoclinic |
|
| TiO2 -OI[17] |
orthorhombic |
|
| cubic form[18] |
cubic |
P > 40 GPa, T > 1600 °C |
| TiO2 -OII, cotunnite(PbCl2)-like[19] |
orthorhombic |
P > 40 GPa, T > 700 °C |
Application
The most important application areas are paints and varnishes as well as paper and plastics, which account for about 80% of the world's titanium dioxide consumption. Other pigment applications such as printing inks, fibers, rubber, cosmetic products and food account for another 8%. The rest is used in other applications, for instance the production of technical pure titanium, glass and glass ceramics, electrical ceramics, catalysts, electric conductors and chemical intermediates. It is also in most red-coloured candy.
Health and safety
Titanium dioxide is incompatible with strong reducing agents and strong acids.Violent or incandescent reactions occur with molten metals that are very electropositive, e.g. aluminium, calcium, magnesium, potassium, sodium, zinc and lithium.
Titanium dioxide accounts for 70% of the total production volume of pigments worldwide. It is widely used to provide whiteness and opacity to products such as paints, plastics, papers, inks, foods, and toothpastes. Used in food applications, it whitens skim milk and adds flavors to soups, beer, and nuts.[60] It is also used in cosmetic and skin care products, and it is present in almost every sunblock, where it helps protect the skin from ultraviolet light.
Titanium dioxide dust, when inhaled, has been classified by the International Agency for Research on Cancer (IARC) as an IARC Group 2B carcinogen, meaning it is possibly carcinogenic to humans.
Company Info.
Xingtai Landi Trading Co. Ltd was founded in 2003. Located in Xingtai,Hebei. Our company has been engaged in the import and export of raw materials for many years.We have passed ISO9001 national quality management system certification.
We establish a perfect marketing and servicing network in large and medium cities ofchina. Expand to international market of Middle East, Africa, Southeast Asia, and othercountries & regions. Our products have won the domestic and foreign customers supporting and trusting.
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