Overview
Titanium Dioxide Composite White is a high-performance pigment formulation where TiO2 is combined with other materials to enhance specific properties or reduce costs. As the most widely used white pigment globally, it accounts for over 70% of all pigment production. The composite version typically blends pure titanium dioxide with extenders or processing aids to optimize characteristics like dispersion, weather resistance, or cost-effectiveness for particular applications. These formulations maintain the essential benefits of pure TiO2 while offering tailored solutions for different industries.
Physical and Chemical Properties
The composite material inherits TiO2's fundamental characteristics including its high refractive index (2.7 for rutile form), which provides exceptional opacity and brightness. Particle sizes typically range from 0.2-0.3 μm for optimal light scattering. Chemical stability is excellent, with resistance to acids, alkalis, and oxidizing agents. The composite nature may introduce additional properties depending on the specific formulation, such as improved dispersibility in certain media or reduced photocatalytic activity compared to pure TiO2.
Main Applications
In coatings, the composite provides outstanding coverage and durability, particularly in architectural paints where it constitutes 20-30% of the formulation. Plastics applications leverage its light stability and heat resistance for products ranging from PVC pipes to food packaging. The paper industry uses it for high-quality whiteness in specialty papers, while cosmetics formulations benefit from its brightness and UV protection properties. Recent developments include nanocomposite versions for advanced applications like self-cleaning surfaces and photocatalytic coatings.
Safety and Storage
While TiO2 itself is generally considered non-toxic, inhalation of fine dust particles should be avoided. The IARC classifies TiO2 as possibly carcinogenic to humans (Group 2B) when inhaled as powder in occupational settings. Storage requires protection from moisture and contamination. Bulk quantities should be kept in original packaging in well-ventilated areas away from incompatible materials like strong acids or reducing agents. Shelf life typically exceeds 2 years when stored properly.
B2B Procurement Guide
Industrial buyers should specify grade (rutile preferred for most applications), TiO2 content (commonly 80-95% in composites), and particle size distribution. Request technical datasheets with reflectance values and oil absorption numbers. Consider supply chain reliability and technical support capabilities of suppliers. Large-volume buyers can negotiate better pricing, especially for standard grades. Sample testing is recommended to verify performance in your specific application before bulk purchases.
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