High refractive index (1.85)
Unusually close to TiO₂ itself, meaning this extender contributes genuine opacity rather than acting as inert bulk filler.
TiO₂ substitution capability (10–50%)
Lets paint formulators reduce costly TiO₂ loading while maintaining hiding power, a direct cost saving.
Fine, controlled particle size
Consistent particle distribution (99.0%/98.8% passing spec) supports predictable dispersion and opacity contribution batch to batch.
Cross-application versatility
FP440 suited to Paint & Coatings and FP550 to Plastics, giving formulators both options from the same product family.