Plastic processing often involves temperatures above 200 °C, where unstable pigments can decompose or change shade. High heat-stable pigments maintain color, avoid plate-out, and minimize degradation during extrusion or injection molding.

Pigments with low solubility and optimized particle size are selected to reduce blooming and bleeding into adjacent materials. Migration performance is tested under heat and contact conditions relevant to packaging, toys, and other sensitive applications.

Yes, many plastic pigments are heavy‑metal‑free and designed to meet FDA, EU, and other global food-contact or toy safety regulations. Documentation and certifications are typically provided so manufacturers can validate compliance for their specific end-use.