The author thanks Marco Leona, Scientist-in-Charge of the Department of Scientific Research at the Metropolitan Museum of Art for conducting fluorescence spectrometry on Wheel of Fortune and a valuable discussion of the research, as well as Silvia Centeno, Research Scientist at the Metropolitan Museum of Art, who performed Raman analysis on the watercolors and also contributed her insight. The phenomenon of the phosphorescing lithopone was originally discovered during the author's fellowship in the Sherman Fairchild Center for the Conservation of Works on Paper, funded by the Andrew W. Mellon Foundation. The author thanks all her colleagues for their ideas and support during the research of this paper, and special thanks to Rachel Mustalish for her assistance in editing this work.

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Overall, TiO2 powder suppliers play a vital role in ensuring that industries have access to the high-quality TiO2 powder they need for their various applications. By sourcing and supplying this essential raw material, TiO2 powder suppliers help to drive innovation and growth in industries around the world.

The principal natural source of titanium dioxide is mined ilmenite ore, which contains 45-60 percent TiO₂. From this, or an enriched derivative (known as titanium slag), pure TiO₂ can be produced using the sulphate or chloride process.

In addition to these uses, titanium dioxide is also used in: