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Zinc barium sulfate, commonly known as lithopone, is a widely used inorganic compound in the pigment industry. This white pigment has gained popularity due to its excellent hiding power and good stability under various conditions. As such, it finds applications in paints, plastics, rubber, and even in food coloring. With the increasing demand for high-quality zinc barium sulfate, manufacturers around the globe are stepping up their game to meet market needs.

In 2019, EFSA published a statement on the review of the risk related to the exposure to food additive titanium dioxide (E171) performed by the French Agency for Food, Environment and Occupational Health Safety (ANSES). In its statement, EFSA highlighted that the ANSES opinion reiterated the uncertainties and data gaps previously identified by EFSA and did not present findings that invalidated the Authority’s previous conclusions on the safety of titanium dioxide.

 In addition to these traditional uses, titanium dioxide is gaining popularity in emerging fields such as photocatalysis and solar energy conversion
4. Safety Ponceau 4R and titanium dioxide are approved for use in cosmetics by regulatory agencies around the world, and they have been extensively tested for safety.

Lithopone B301, Lithopone B311 powder’s 2 main components:

 

After oral ingestion, the absorption of titanium dioxide particles is low, however they can accumulate in the body, Maged Younes, chair of the European Food Safety Authority's expert Panel on Food Additives and Flavourings, said in a May 2021 statement.

 Lithopone B311 is a white pigment composed of a mixture of barium sulfate and zinc sulfide. It is known for its good hiding power, excellent weather resistance, and low oil absorption. These properties make B311 ideal for use in applications where high opacity and durability are required, such as in exterior paints and coatings.

Applications

References

As early as sixty years ago, zinc sulphide was first thought of as a pigment for coloring India rubber and a patent for the process of its manufacture was issued in England. But it was not until twenty years later that zinc sulphide and its manufacture was seriously considered as a pigment for paint, and in 1874 a patent was issued for a process of manufacturing a white pigment, composed of zinc sulphide and barium sulphate, known as Charlton white, also as Orr's white enamel. This was followed in 1876 by a patent issued to a manufacturer named Griffith and the product, which was similar in character to Charlton white, was known as Griffith's patent zinc white. In 1879 another patent for a more novel process was obtained by Griffith & Cawley, the product made under this process proving the best of the series placed upon the market up to that date. After that time many new processes were patented, all, however, tending to the same object, that of producing a white pigment, composed of zinc sulphide and barium carbonate, the results, however, in many cases ending with failure.
Propiedades One of the main uses of titanium oxide is in the production of paints and coatings. Titanium oxide is a key ingredient in many paints and coatings because of its ability to provide opacity, brightness, and UV protection. It is also resistant to discoloration and degradation, making it an ideal choice for outdoor applications.
 

Lithopone is produced by coprecipitation of barium sulfate and zinc sulfide. Most commonly coprecipitation is effected by combining equimolar amounts of zinc sulfate and barium sulfide:

Another notable supplier is Tronox, a global leader in the mining and inorganic chemicals industry. Their food-grade anatase TiO2, marketed as Tronox Alkali Process, is known for its purity, stability, and consistent performance Their food-grade anatase TiO2, marketed as Tronox Alkali Process, is known for its purity, stability, and consistent performance Their food-grade anatase TiO2, marketed as Tronox Alkali Process, is known for its purity, stability, and consistent performance Their food-grade anatase TiO2, marketed as Tronox Alkali Process, is known for its purity, stability, and consistent performanceanatase titanium dioxide food grade suppliers. They prioritize sustainability and eco-friendly practices in their production process. However, the China Lithopone B301 market is not without challenges. Environmental regulations, fluctuating raw material prices, and the ongoing global trade tensions have created uncertainties in the supply chain. Nevertheless, Chinese manufacturers have shown resilience by investing in R&D to improve product quality and efficiency, as well as exploring new markets to mitigate risks.
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