Journalism
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2025-08-14 18:17
2646
dissolving titanium dioxide manufacturer
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2025-08-14 18:12
616
Résumé–Cet article traite de la découverte de lithopone phosphorescent sur des dessins à l'aquarelle, datés entre 1890 et 1905, de l'artiste Américain John La Farge et de l'histoire du lithopone dans l'industrie des pigments à la fin du 19e et au début du 20e siècle. Malgré de nombreuses qualités souhaitables pour une utilisation en tant que blanc dans les aquarelles et les peintures à l'huile, le développement du lithopone comme pigment pour artistes a été compliqué de par sa tendance à noircir lorsqu'il est exposé au soleil. Sa disponibilité et son usage par les artistes demeurent incertains parce que les catalogues des marchands de couleurs n'étaient généralement pas explicites à indiquer si les pigments blancs contenaient du lithopone. De plus, lors d'un examen visuel, le lithopone peut être confondu avec le blanc de plomb et sa phosphorescence de courte durée peut facilement être ignorée par l'observateur non averti. À ce jour, le lithopone phosphorescent a seulement été documenté sur une autre œuvre: une aquarelle de Van Gogh. En plus de l'histoire de la fabrication du lithopone, cet article décrit le mécanisme de sa phosphorescence et son identification à l'aide de la spectroscopie Raman et de la spectrofluorimétrie.
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2025-08-14 18:10
1634
Our state-of-the-art facilities employ cutting-edge technology to ensure consistent quality and environmental sustainability throughout the production process. We adhere to strict standards for particle size distribution, brightness, and tint strength to meet the diverse needs of our customers across different industries. Our research and development team continuously explores new ways to improve the performance and reduce the environmental impact of our products.
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2025-08-14 17:46
1284
The most significant uncertainty identified by the EU experts was the concern that TiO2 particles may have genotoxic effects. Genotoxicity refers to the ability of a chemical to directly damage genetic material within a cell (DNA), which may lead to cancer in certain situations. Although the experts did not conclude that TiO2 particles in E171 are genotoxic, they could not rule out the concern that they might be.
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2025-08-14 17:04
2304
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2025-08-14 16:44
652
Lithopone, with the chemical formula ZnS·BaSO4, is a white pigment commonly used in a variety of industrial applications. As a leading lithopone manufacturer, we take pride in producing high-quality products that meet the demands of our customers.
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2025-08-14 16:35
2287
The process described is seen to consist of preparing separate solutions of readily-soluble salts of zinc and barium together with a third salt, which will further the reaction and at the same time upon uniting the solutions produce by one set of combinations lithopone and a marketable byproduct. This process, moreover, insures the greatest purity of the substances produced and avoids the expense attendant upon more difficult methods in common use. Thisis particularly true with respect to the manufacture of various grades of lithopone, since by properly calculating the amounts of the ingredients used, as above illustrated, any desired quality of lithopone may be produced without mixing additional substances to increase or decrease the percentage of zinc sulfid. The entire product, too, is an absolutely uniform mixture when prepared in accordance with my process.
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2025-08-14 16:31
587
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2025-08-14 16:21
2793
1. Purity The purity of ZnS is a critical factor as it directly affects the performance of products made with it. Suppliers should be able to provide certificates of analysis (COAs) or material safety data sheets (MSDSs) to confirm the purity levels of their products.
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2025-08-14 15:49
1604
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2025-08-14 18:12
616
Résumé–Cet article traite de la découverte de lithopone phosphorescent sur des dessins à l'aquarelle, datés entre 1890 et 1905, de l'artiste Américain John La Farge et de l'histoire du lithopone dans l'industrie des pigments à la fin du 19e et au début du 20e siècle. Malgré de nombreuses qualités souhaitables pour une utilisation en tant que blanc dans les aquarelles et les peintures à l'huile, le développement du lithopone comme pigment pour artistes a été compliqué de par sa tendance à noircir lorsqu'il est exposé au soleil. Sa disponibilité et son usage par les artistes demeurent incertains parce que les catalogues des marchands de couleurs n'étaient généralement pas explicites à indiquer si les pigments blancs contenaient du lithopone. De plus, lors d'un examen visuel, le lithopone peut être confondu avec le blanc de plomb et sa phosphorescence de courte durée peut facilement être ignorée par l'observateur non averti. À ce jour, le lithopone phosphorescent a seulement été documenté sur une autre œuvre: une aquarelle de Van Gogh. En plus de l'histoire de la fabrication du lithopone, cet article décrit le mécanisme de sa phosphorescence et son identification à l'aide de la spectroscopie Raman et de la spectrofluorimétrie.
...
2025-08-14 18:10
1634
Our state-of-the-art facilities employ cutting-edge technology to ensure consistent quality and environmental sustainability throughout the production process. We adhere to strict standards for particle size distribution, brightness, and tint strength to meet the diverse needs of our customers across different industries. Our research and development team continuously explores new ways to improve the performance and reduce the environmental impact of our products.
...
2025-08-14 17:46
1284
The most significant uncertainty identified by the EU experts was the concern that TiO2 particles may have genotoxic effects. Genotoxicity refers to the ability of a chemical to directly damage genetic material within a cell (DNA), which may lead to cancer in certain situations. Although the experts did not conclude that TiO2 particles in E171 are genotoxic, they could not rule out the concern that they might be.
...
2025-08-14 17:04
2304
...
2025-08-14 16:44
652
Lithopone, with the chemical formula ZnS·BaSO4, is a white pigment commonly used in a variety of industrial applications. As a leading lithopone manufacturer, we take pride in producing high-quality products that meet the demands of our customers.
...
2025-08-14 16:35
2287
The process described is seen to consist of preparing separate solutions of readily-soluble salts of zinc and barium together with a third salt, which will further the reaction and at the same time upon uniting the solutions produce by one set of combinations lithopone and a marketable byproduct. This process, moreover, insures the greatest purity of the substances produced and avoids the expense attendant upon more difficult methods in common use. Thisis particularly true with respect to the manufacture of various grades of lithopone, since by properly calculating the amounts of the ingredients used, as above illustrated, any desired quality of lithopone may be produced without mixing additional substances to increase or decrease the percentage of zinc sulfid. The entire product, too, is an absolutely uniform mixture when prepared in accordance with my process.
...
2025-08-14 16:31
587
...
2025-08-14 16:21
2793
1. Purity The purity of ZnS is a critical factor as it directly affects the performance of products made with it. Suppliers should be able to provide certificates of analysis (COAs) or material safety data sheets (MSDSs) to confirm the purity levels of their products.
...
2025-08-14 15:49
1604
