dye pigment titanium dioxide manufacturers

B301 lithopone is distinguished by its exceptional brightness and tinting strength, making it ideal for applications requiring a crisp, clean hue. On the other hand, B311 offers a subtle difference in terms of shade and opacity, catering to those who prefer a slightly softer yet still highly effective pigment. The nuances between these two grades may seem minor, but they significantly impact the end result, underscoring the importance of precise lithopone selection based on the intended use.

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 At present, Lide powder is mainly produced in China. Most of the domestic Lide powder production is still using traditional methods. The main raw materials are zinc oxide, sulfuric acid and barium sulfide (barite and coal are produced by high temperature reduction). Zinc 45% ~ 70%. The traditional method for producing the Liede powder process is to use zinc bakelite containing more than 45% zinc as a raw material to be leached with sulfuric acid to obtain a crude zinc sulfate solution, and then to remove iron by potassium permanganate, and then replace the heavy metal with zinc powder and filter to obtain zinc sulfate. The refined liquid is further subjected to metathesis reaction, pressure filtration, calcination, rinsing, drying, and pulverization with strontium sulfide to obtain a series of different types of lindose powder containing zinc sulfide of 30% or more. The whole process is carried out in an acidic (ra<7) environment, which consumes a large amount of sulfuric acid. The sulfuric acid has strong corrosiveness and requires high production equipment. The final discharged slag is acidic slag, which brings new pollution to the environment. High requirements, high production costs, and poor quality of the products obtained.

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Prof. Maged Younes, Chair of EFSA’s expert Panel on Food Additives and Flavourings (FAF), wrote of the decision: “Taking into account all available scientific studies and data, the Panel concluded that titanium dioxide can no longer be considered safe as a food additive. A critical element in reaching this conclusion is that we could not exclude genotoxicity concerns after consumption of titanium dioxide particles. After oral ingestion, the absorption of titanium dioxide particles is low, however they can accumulate in the body.”

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In conclusion, anatase titanium dioxide is a versatile and reliable pigment that offers numerous benefits for paints. Its exceptional hiding power, light scattering properties, chemical stability, and environmental friendliness make it an ideal choice for a wide range of paint applications. Whether used for decorative purposes, protective coatings, or specialized finishes, anatase titanium dioxide can enhance the performance and appearance of paints, ensuring long-lasting beauty and durability for painted surfaces.

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