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Chemical property

With the acid reaction：TiO2+H2SO4=TiOSO4+H2O

And alkali reaction：TiO2+2NaOH=Na2TiO3+H2O

Classification

Class I: titanium dioxide dry grinding and untreated titanium dioxide, class with low surface area and low oil absorption value.

Class II: as I kind of titanium dioxide after treatment, and wet grinding, the removal of large particles, and with 4% amount of silicon - aluminum coating, it has the lowest surface area and the lowest oil absorption value.

Class III: typical superfine coating level, and organic coating.

IV: big coating amount, and can be divided into IV A and Ⅳ B, the amount of coating in 5~10%. IV B main application adding TiO2 content high, because of its opacity is better than that of IV a.