In this blog, we’ll break down the key differences between sulphate-based and chloride-based TiO₂, helping you make an informed choice for your specific application.

1. The Production Process

Sulphate Process: Traditional and Cost-Effective

The sulphate process involves using ilmenite or titanium slag as the primary raw material. This process utilizes sulfuric acid to dissolve titanium-bearing ores, resulting in titanium oxysulphate. This compound is hydrolyzed to form hydrated titanium dioxide, which is finally calcined to produce TiO₂.

• Pros:

1. Suitable for less demanding applications.

2. More cost-effective in certain markets.

• Cons:

1. Produces more waste and by-products.

2. Generally lower in purity compared to chloride-based TiO₂.

Chloride Process: Advanced and Efficient

The chloride process uses rutile or synthetic rutile as feedstock, which reacts with chlorine gas in the presence of carbon. This produces titanium tetrachloride (TiCl₄), which is purified and oxidized to form high-purity titanium dioxide.

• Pros:

1. Produces high-purity TiO₂.

2. Fewer impurities and higher consistency in particle size.

• Cons:

1. Requires more energy and higher-quality feedstock

2. More expensive production process.

2. Purity and Properties: When Quality Matters

Sulphate-Based TiO₂: Cost-Effective and Versatile

While sulphate-based titanium dioxide tends to be less pure, it is still widely used in coatings, plastics, and certain paper products. However, the higher levels of impurities, such as iron oxides, may slightly affect the color and optical properties.

• Applications:

1. Coatings for industrial use.

2. Less demanding formulations in plastics and paper industries.

Chloride-Based TiO₂: High-Purity for High-Performance

In contrast, chloride-based titanium dioxide is known for its high purity, resulting in better brightness, opacity, and particle size control. This makes it ideal for applications where appearance and performance are key, such as premium paints, cosmetics, and high-quality coatings.

• Applications:

1. High-performance paints and coatings.

2. Cosmetics and personal care products.

3. Applications requiring high brightness and opacity.

3. Environmental Impact: Efficiency vs. Sustainability

Sulphate Process: More Waste, More By-Products

The sulphate process is known to produce more waste, including dilute sulfuric acid, which must be carefully treated before disposal. The process also generates more by-products, which can have a negative impact on the environment if not managed properly.

Chloride Process: Efficient but Energy-Intensive

While the chloride process is generally more efficient and produces less waste, it does require higher-quality raw materials and a significant amount of energy, particularly chlorine gas and carbon, making it more energy-intensive overall.

Conclusion: Which Titanium Dioxide Is Right for You?

If your application demands high-purity, brightness, and consistency, chloride-based TiO₂ is the clear choice. However, for more cost-sensitive applications, where extreme purity isn’t necessary, sulphate-based TiO₂ may offer the performance you need at a lower price point.

At Chemelyne Sppecialities Pvt. Ltd., we understand that selecting the right titanium dioxide for your application can be challenging. That’s why we offer a full range of both sulphate-based and chloride-based TiO₂, ensuring that you get the perfect product tailored to your needs.

Get in Touch!

If you’re looking for high-quality titanium dioxide for your formulation needs, Chemelyne SppecialitiesPvt. Ltd. is here to help. Contact us today to learn more about our sulphate-based and chloride-based TiO₂ offerings. We are committed to providing the best solutions with reliable service, sustainable supply, and competitive pricing.