industrial grade titanium dioxide

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This article discusses the discovery of phosphorescent lithopone on watercolor drawings by American artist John La Farge dated between 1890 and 1905 and the history of lithopone in the pigment industry in the late 19th and early 20th centuries. Despite having many desirable qualities for use in white watercolor or oil paints, the development of lithopone as an artists’ pigment was hampered by its tendency to darken in sunlight. Its availability to, and adoption by, artists remain unclear, as colormen's trade catalogs were generally not explicit in describing white pigments as containing lithopone. Further, lithopone may be mistaken for lead white during visual examination and its short-lived phosphorescence can be easily missed by the uninformed observer. Phosphorescent lithopone has been documented on only one other work-to-date: a watercolor by Van Gogh. In addition to the history of lithopone's manufacture, the article details the mechanism for its phosphorescence and its identification aided by Raman spectroscopy and spectrofluorimetry.

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Titanium Dioxide (TiO2), a widely used compound across various industries due to its exceptional refractive index and high photocatalytic activity, is an essential component in sectors ranging from cosmetics to paints and coatings, food additives, and even solar panels. The wholesale TiO2 market plays a crucial role in ensuring a steady supply of this versatile material; however, with its extensive usage comes the responsibility of maintaining stringent safety measures.

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Lithopone B301 is highly valued for its excellent hiding power and brightness, making it an ideal choice for high-quality paints and coatings. Its particle size distribution ensures seamless integration into different mediums, enhancing the overall performance of the end product. On the other hand, Lithopone B311 distinguishes itself with increased chemical stability and resistance to fading, attributes that are crucial for applications requiring longevity and exposure to harsh environments.

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