Kaolinite
Kaolinite (CAS: 1318-74-7) is a naturally occurring clay mineral with the chemical formula Al2O3 · 2SiO2 · 2H2O and a molecular weight of 258.16 g/mol. It is a hydrated aluminum silicate known for its fine particle size, white colour, and inertness. Kaolinite serves as a fundamental raw material in ceramics, paper manufacturing, and as an adsorbent and filler in various industrial applications. Tech Serve Solutions supplies this essential chemical for research and industrial use.
- IUPAC
- Aluminum silicate

Ceramics Production
Kaolinite is a primary component in the manufacturing of ceramics, including porcelain, tiles, and sanitary ware. Its plasticity and refractory properties are crucial for shaping and firing processes.
Paper Manufacturing
In the paper industry, kaolinite is used as a filler and coating pigment. It enhances paper brightness, opacity, and printability, contributing to a smoother surface finish.
Adsorbent and Filler
Due to its fine particle size and adsorptive capabilities, kaolinite functions as an effective adsorbent and filler in rubber, plastics, and paints. It can improve mechanical properties and reduce costs.
Chemical Synthesis
Kaolinite acts as a support or catalyst in certain chemical synthesis reactions. Its mineral structure can facilitate specific transformations in industrial chemical processes.
| Molecular weight | 258.16 |
|---|---|
| Linear formula | Al2O3 · 2SiO2 · 2H2O |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Quality | natural |
|---|
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Kaolinite primarily used for?
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Kaolinite is primarily used in ceramics production, paper manufacturing as a filler and coating pigment, and as an adsorbent and filler in various industries like rubber and plastics. It also finds use in chemical synthesis.
What are the CAS number and chemical formula for Kaolinite?
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The CAS number for Kaolinite is 1318-74-7, and its chemical formula is Al2O3 · 2SiO2 · 2H2O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Kaolinite as a natural grade product. We do not represent this product as USP, BP, or EP grade. Please refer to the product specifications for detailed purity information.
How should Kaolinite be handled safely?
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When handling Kaolinite, it is recommended to wear eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter should be used to avoid inhalation of dust. It is classified as WGK 3 in Germany.
How is Kaolinite packed and shipped?
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Kaolinite is carefully packed to ensure product integrity during transit. Tech Serve Solutions is a global supplier and exporter, equipped to handle diverse shipping and export requirements for this chemical.
How can I request a quote or sample for Kaolinite?
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To request a quote or a sample of Kaolinite, please contact our sales team through the website or by phone. Our experts will assist you with your specific requirements.
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