Overview
Pure white paste colorant is a high-performance pigment dispersion primarily composed of titanium dioxide (TiO₂) suspended in a liquid carrier. It is widely used in industrial applications where bright white coloration is required. The paste form offers advantages over powdered pigments, including easier handling, reduced dust hazards, and better dispersion in final products. Manufacturers often customize the formulation with additives to optimize properties like viscosity, stability, and compatibility with different systems.
Physical and Chemical Properties
The product typically contains 40-80% titanium dioxide by weight, depending on the grade. The high refractive index of TiO₂ (2.7) gives the paste exceptional opacity and brightness. Key technical parameters include particle size distribution (usually 0.2-0.4 microns), pH value (commonly 6-9), and viscosity (often 500-5000 cP). The paste maintains stability against sedimentation and maintains consistent coloration performance under various processing conditions.
Main Applications
In the paint industry, this colorant provides coverage and durability for both interior and exterior coatings. It's particularly valued for architectural paints where long-term color retention is critical. The plastics sector uses it for coloring PVC products, polyolefins, and engineering plastics. Other applications include paper coatings, ink formulations, and textile printing pastes. Recent developments have expanded its use in specialty applications like cosmetic products and food packaging materials.
Safety and Storage
While generally considered safe, the paste may contain processing aids that require proper handling. Always consult the Safety Data Sheet (SDS) for specific product formulations. Store containers tightly sealed at temperatures between 5°C and 35°C. Avoid prolonged storage in extreme conditions as this may affect product performance. Shelf life is typically 12-24 months when stored properly.
B2B Procurement Guide
Industrial buyers should specify requirements for TiO₂ content, viscosity, and compatibility with their production systems. Request technical data sheets and samples for testing before large purchases. Consider supplier reliability, batch-to-batch consistency, and technical support capabilities. For international procurement, factor in shipping conditions and potential customs requirements for chemical products.
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