
Calcined kaolin -25KG
Calcined kaolin is a high-brightness, thermally treated aluminum silicate used as an extender pigment, filler, and performance additive in coatings, plastics, rubber, inks, and construction materials. Calcination increases whiteness, opacity, and hardness, making it ideal for high-performance formulations.
CAS Number
1332-58-7 (Kaolin)
Synonyms
calcined clay, aluminum silicate, calcined kaolinite, anhydrous kaolin, metakaolin (for certain calcination levels)
Chemical Formula
Al₂Si₂O₅(OH)₄ (base kaolin formula; becomes dehydroxylated during calcination)
Appearance
White, free-flowing, fine powder with high brightness

A weak organic acid in crystalline powder form, commonly used as an acidulant, preservative, and cleaning agent.
Synonyms:
2-Hydroxy-1,2,3-propane-tricarboxylic acid, anhydrous citric acid
CAS Number:
77-92-9
Appearance:
White crystalline powder, odorless, soluble in water
Uses
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Extender pigment in paints and industrial coatings
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Opacity enhancer that reduces titanium dioxide usage
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Filler in plastics, rubber, adhesives, and sealants
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Improves printability in inks and paper coatings
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Cement and concrete additive (pozzolanic reactivity for some grades)
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Enhances surface smoothness and mechanical strength in molded products
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Thermal and electrical insulation applications
Key Features
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High brightness and whiteness
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Improved opacity and light scattering due to calcination
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Good particle size control for smooth finishes
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Low oil absorption for efficient formulation
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Thermally stable and chemically inert
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Enhances rheology and reduces settling
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Cost-effective extender for pigment-heavy systems
SDS Summary
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Hazard Classification: Generally low hazard mineral
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Inhalation: Dust may cause mechanical irritation; avoid prolonged exposure
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Skin/Eyes: May cause mild irritation due to fine particles
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Ingestion: Low toxicity; not expected to be harmful
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Fire Hazards: Non-flammable, inorganic mineral
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Handling: Minimize dust generation; use respiratory protection when necessary
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Storage: Store dry to maintain free-flowing behavior
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Environmental: Inert and environmentally stable; not hazardous to water or soil
| Weight | 25 kg |
|---|
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