food grade thermochromic pigment

KTP-31-GBF is a food grade thermochromic pigment that shifts from vivid green to fully colorless at 31°C — clean, reversible, and BPA Free. Engineered for direct skin and food contact surface applications, this heat sensitive pigment powder is well suited for cosmetic formulations, nail products, and food contact items like cups and spoons. Its fine 3–10μm particle size ensures smooth dispersion across both water- and solvent-based systems.

KTP-31-PBF is a rose red thermochromic pigment powder that transitions to colorless at 31°C — a body-temperature-proximate activation point well-suited for skin-contact and food-contact applications. Certified BPA Free, this heat reactive pigment is formulated for cosmetics, nail systems, and food-contact printing where safety compliance is non-negotiable. It performs equally well in textile printing and craft applications where a clean, reversible color-fade effect is the design intent.