Titanium Dioxide (CAS No. 13463-67-7) An Overview of Manufacturers and Applications

Titanium Dioxide (TiO₂), identifiable by its CAS number 13463-67-7, is a white, opaque, and naturally occurring mineral that serves as one of the most widely used opacifying agents and pigments globally. Thanks to its superior brightness, high refractive index, and stable chemical structure, TiO₂ plays a critical role in various industries, including paints, coatings, plastics, and food products. This article delves into the characteristics of titanium dioxide, its manufacturing process, major manufacturers, and its myriad applications.

Properties and Characteristics

Titanium dioxide is known for its exceptional whiteness and UV-resistance, making it an ideal choice for applications requiring brilliant color and durability. It exists primarily in two crystal forms rutile and anatase. The rutile form is more stable and offers better optical properties, making it the preferred choice for most applications. The anatase form, while less stable, is often used in photocatalytic applications due to its unique photocatalytic properties.

Manufacturing Process

The production of titanium dioxide typically involves two primary processes the sulfate process and the chloride process.

1. Sulfate Process This older method begins with the oxidation of ilmenite or titanium ore using sulfuric acid, leading to the formation of titanium sulfate. The titanium sulfate is then hydrolyzed to precipitate hydrated titanium dioxide, which is further processed and calcined to produce the desired TiO₂ pigment.

2. Chloride Process This more modern and environmentally friendly method uses chlorine gas to convert titanium ores into titanium tetrachloride (TiCl₄). The TiCl₄ is then oxidized at high temperatures to produce TiO₂. The chloride process is known for yielding a purer product with superior qualities, leading to its increased use in manufacturing.

Major Manufacturers

In the global market, several companies stand out as significant producers of titanium dioxide

1. DuPont One of the pioneers in titanium dioxide production, DuPont offers TiO₂ products that serve various applications, including coatings and plastics.

2. Kronos Worldwide Based in the US, Kronos is known for its high-quality titanium dioxide products, focusing on innovation and sustainable practices.

3. Venator Materials PLC Venator is committed to offering performance pigments and additives, including a diverse range of TiO₂ products known for their premium quality.

4. Ineos A well-known player in the chemical industry, Ineos produces titanium dioxide through advanced manufacturing techniques while prioritizing environmental sustainability.

5. Titanium Dioxide Corp This company is recognized for its wide variety of TiO₂ products suitable for multiple industrial sectors, focusing on quality and customer service.

Applications of Titanium Dioxide

The versatility of titanium dioxide allows it to be employed across numerous sectors

- Paints and Coatings TiO₂ is extensively used in paints and coatings for its ability to enhance opacity, brightness, and durability. Its resistance to fading and degradation due to UV exposure makes it an essential component.

- Plastics In the plastics industry, TiO₂ is added to improve the whiteness and UV stability of plastic products, making them more appealing and longer-lasting.

- Cosmetics TiO₂ is utilized in cosmetics as a pigment and for its sun-blocking properties, as it effectively scatters UV radiation.

- Food Products Although its usage in food has faced scrutiny, titanium dioxide can still be found as a food coloring agent (E171) in various edible products, contributing to their visual appeal.

- Photocatalysis The unique photocatalytic properties of titanium dioxide have opened up applications in environmental remediation, such as air and water purification, making it a critical material in sustainable technologies.

Conclusion

Titanium dioxide (CAS No. 13463-67-7) is a vital compound in modern manufacturing, serving as a key ingredient in numerous industries. Its production, dominated by major manufacturers, combines efficiency with environmental considerations, ensuring a continued supply of high-quality TiO₂. As industries evolve and sustainability becomes more critical, titanium dioxide will likely play an increasingly important role in innovative applications that meet both consumer needs and environmental standards.