nano titanium dioxide manufacturers

The determination of sulphate in titanium dioxide (TiO2) is a crucial process for manufacturers to ensure the quality and purity of their products. Sulphate, if present in significant amounts, can affect the performance and color of TiO2, leading to potential issues in various applications such as coatings, plastics, and cosmetics. Therefore, accurate and reliable methods for detecting sulphate are essential for manufacturers to maintain high standards of product quality.

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Although barium sulfate is almost completely inert, zinc sulfide degrades upon exposure to UV light, leading to darkening of the pigment. The severity of this UV reaction is dependent on a combination of two factors; how much zinc sulfide makes up the pigments formulation, and its total accumulated UV exposure. Depending on these factors the pigment itself can vary in shade over time, ranging from pure white all the way to grey or even black. To suppress this effect, a dopant may be used, such as a small amount of cobalt salts, which would be added to the formulation. This process creates cobalt-doped zinc sulfide. The cobalt salts help to stabilize zinc sulfide so it will not have as severe a reaction to UV exposure.

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