Technical Data Sheet · Version 1.0 · Issued 02 July 2026
Technical Data Sheet
Calcined Kaolin
Zenco Chemicals LtdCategory: Paints & Coatings
DOC REFERENCE
Version: 1.0
Issue: 02 July 2026
Revised: 02 July 2026
CONFIDENTIAL — VIEW ONLY
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Product Description
Calcined kaolin is a fine white powder produced by the thermal treatment of kaolin clay to remove chemically bound water, resulting in metakaolin (Al2Si2O7) with excellent brightness, high opacity, and enhanced dispersibility. It is widely used as a filler and pigment in paper, paints, rubber, plastics, ceramics, and refractory materials. Zenco Systems Ltd supplies premium calcined kaolin across East Africa, backed by reliable supply chains, technical support, and competitive pricing.
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Chemical Composition
| Component | CAS Number | % w/w |
|---|---|---|
| Metakaolin (Aluminosilicate) | 92704-41-9 | >= 85% |
| Silica (SiO2) | 14808-60-7 | Approx. 40%-50% |
| Alumina (Al2O3) | 1344-28-1 | Approx. 35%-45% |
| Other mineral impurities | N/A | < 10% |
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Physical & Chemical Properties
| ph | 6.5 - 8.0 (aqueous slurry) |
| odour | Odorless |
| colour | White |
| viscosity | Not applicable |
| appearance | Fine white powder |
| solubility | Insoluble in water |
| flash point | Non-flammable |
| boiling point | Not applicable (inorganic mineral powder) |
| specific gravity | 2.6 - 2.7 g/cm³ |
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Performance Data & Dosage
| contact time | Consult product label |
| compatibility | Water-based paint systems, Rubber compounds, Plastic matrices, Ceramic formulations |
| dilution ratio | Not applicable |
| incompatibility | Strong acids, Strong alkalis |
| recommended dosage | Consult product label |
| treatment temperature | Up to 1200°C depending on application |
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Applications & Industries
Applications
- Paper filler
- Paint and coatings
- Rubber reinforcement
- Plastic filler
- Ceramics manufacturing
- Refractory materials
Industries Served
Paper & packagingPaint & coatingsRubber manufacturingPlastic productionCeramics industryMining and minerals
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Health & Safety (GHS)
Signal Word: None
Hazard Class: Not classified as hazardous under GHS Rev.9
Hazard Statements:
PPE Required:
Dust mask or respirator Protective gloves Safety goggles
first aid skin
Wash affected skin with soap and water.
first aid eyes
Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing. Seek medical attention if irritation persists.
first aid ingestion
Rinse mouth with water. Seek medical attention if symptoms occur.
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Storage & Handling
| disposal | Dispose in accordance with local regulations. Not classified as hazardous waste. |
| shelf life | 24 months if stored under recommended conditions |
| container material | 25kg and 50kg sealed bags, 200kg steel drums |
| storage conditions | Store in a dry, moisture-free environment to prevent clumping and maintain product integrity. |
| storage temperature | Store at ambient temperature |
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Packaging & Transport
25kg bags50kg bags200kg drums
| un number | Not regulated |
| packing group | Not applicable |
| transport class | Not dangerous goods |
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Standards & Compliance
✓ KEBS Certified✓ ISO 9001:2015 Quality Management System
| Standard | Scope |
|---|---|
| KEBS KS EAS 204:2018 | Common specification for fillers used in paper and paint industries |
| ISO 3262-1:1997 | Pigments and extenders — Definitions and methods of testing |
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Frequently Asked Questions
What is the typical purity of calcined kaolin?
Purity varies; contact Zenco Systems Ltd for exact specifications.
Do you offer bulk shipping to Tanzania?
Yes, Zenco Systems Ltd supplies bulk orders across Tanzania and East Africa.
Is calcined kaolin safe for food-contact applications?
It depends on grade; contact us for food-grade variants if available.
How should calcined kaolin be stored?
Store in a dry, moisture-free environment to prevent clumping.
Zenco Chemicals Ltd — https://zencochemicals.comTDS-CALCINED-KAOLIN-IN-KENYA-UGANDA-TANZANIA · v1.0 · 02 July 2026FOR TECHNICAL REFERENCE ONLY
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