Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

BASF SP-33 Calcined Kaolin

BASF SP-33 Calcined Kaolin is a high-purity, surface-treated calcined kaolinite from BASF’s SP-series, engineered for enhanced dispersion, brightness, and rheology control in coatings, plastics, and inks—delivering superior opacity, gloss retention, and chemical stability versus raw or partially calcined alternatives.
  • basf sp 33 calcined kaolin_fed3daed
  • basf sp 33 calcined kaolin_fed3daed

Features Of BASF SP-33 Calcined Kaolin

  1. Highly reflective, bright white pigment with excellent light-scattering properties.

  2. Enhanced chemical inertness and thermal stability due to complete calcination.

  3. Optimized particle size distribution for improved dispersion and rheology control.

  4. Low abrasivity, minimizing wear on processing equipment and extending tool life.

  5. Consistent batch-to-batch quality supported by BASF’s stringent global manufacturing standards.

Typical Applications Of BASF SP-33 Calcined Kaolin

  1. High-performance architectural and industrial coatings requiring opacity and whiteness.

  2. Premium interior wall paints and ceiling finishes for superior hiding power.

  3. Plastic masterbatches for polyolefins and PVC where brightness and heat resistance are critical.

  4. Specialty inks, including flexographic and gravure formulations demanding low viscosity and high gloss.

  5. Adhesives and sealants requiring functional filler performance without compromising clarity or cure behavior.

Specifications Of BASF SP-33 Calcined Kaolin

Chemical TypeCalcined kaolin (hydrated aluminum silicate, fully dehydroxylated)
Product FormFine, free-flowing dry powder
AppearanceBright white, non-odorous powder
Primary ApplicationsFunctional extender pigment in coatings, plastics, inks, and adhesives
Key FeaturesHigh brightness (ISO 2847-1), low oil absorption (~55 g/100 g), pH 6.5–7.5 (5% suspension)
BenefitsImproved opacity, reduced TiO₂ demand, enhanced film durability and surface smoothness
Storage StabilityStable under dry, ambient conditions; protect from moisture ingress


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