Overview
Titanium White Pigment Paste is a concentrated dispersion of titanium dioxide (TiO2) in a liquid carrier, typically water or organic solvents. It is widely used as a whitening and opacifying agent in industrial applications. The paste form offers ease of handling and uniform dispersion, making it a preferred choice for manufacturers. TiO2 is the most common white pigment due to its exceptional light-scattering properties. The paste formulation ensures consistent color strength and reduces dust hazards compared to powdered TiO2. It is compatible with various binding systems, including acrylics, alkyds, and epoxies.
Physical and Chemical Properties
Titanium White Pigment Paste exhibits high refractive index (2.7 for rutile TiO2), which contributes to its superior opacity and brightness. The paste typically contains 40-70% TiO2 by weight, with the remainder being dispersants, stabilizers, and solvents. Its viscosity ranges from 1,000 to 10,000 cP, depending on the formulation. The chemical stability of TiO2 makes it resistant to acids, alkalis, and environmental degradation. It provides excellent UV resistance, preventing substrate yellowing and degradation. The paste is non-flammable but may separate over time; mild agitation is recommended before use.
Main Applications
The primary use of Titanium White Pigment Paste is in the coatings industry, where it serves as a key component in architectural paints, automotive coatings, and industrial finishes. Its high opacity reduces the number of coats required, improving efficiency. In the plastics industry, it is used for coloring PVC, polyolefins, and engineering polymers. The printing ink sector utilizes TiO2 paste for producing white and light-colored inks with excellent printability. Other applications include ceramics, paper coatings, and textile printing. The paste form is particularly advantageous for water-based systems, where powder dispersion can be challenging.
Safety and Storage
While titanium dioxide itself is considered non-toxic, the paste may contain additives that require careful handling. Use gloves and eye protection to prevent skin and eye irritation. Ensure adequate ventilation when working with solvent-based formulations. Store the paste in original, tightly sealed containers at temperatures between 5-30°C. Avoid freezing, as this can destabilize the dispersion. Shelf life is typically 12-24 months when stored properly. Separate storage from strong oxidizers and acids is recommended.
B2B Procurement Guide
When purchasing Titanium White Pigment Paste, specify the TiO2 content, viscosity, and carrier medium (water or solvent) required for your application. Request technical data sheets and samples to verify performance in your formulation. Key suppliers include Chemours, Kronos, and Tronox. Consider bulk purchasing for cost savings, but ensure your storage capacity aligns with the product's shelf life. Negotiate pricing based on volume and long-term contracts. For international shipments, verify compliance with local regulations regarding chemical imports.
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