china rc 822 titanium dioxide

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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In conclusion, the rutile type TiO2 stands out for its robust physical and chemical properties, which translate into a myriad of practical applications. From enhancing the performance of industrial coatings to aiding environmental clean-up efforts, rutile continues to be a cornerstone material in modern industry and science. As research progresses, it is likely that new uses for this remarkable substance will be discovered, further cementing its status as a versatile and indispensable material.

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