Molekula
Kaolin
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Kaolin is a naturally occurring clay mineral composed primarily of kaolinite, widely used in ceramics, paper coating, pharmaceuticals, and as a filler or extender in plastics, paints, and rubber. It provides whiteness, opacity, and smooth texture while enhancing product performance. This chemical has the CAS number 1332-58-7 and the molecular formula Al2Si2O5(OH)4. It is stored at ambient conditions and carries no signal word for hazard classification. Molekula supplies Kaolin from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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1 kg — £41.20 per pack ex VAT · £49.44 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White or light yellow powder |
| Water | ≤2% |
| pH | 5.0 - 7.0 |
| Brightness | (ISO R457) 81.5 - 83.5 |
| +53μm TR | ≤500ppm |
| Sedigraph >10μm | ≥45.0% |
| Sedigraph <2μm | ≤15.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 83 °C |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 12687158 |
| CAS Number | 1332-58-7 |
| Molecular Formula | ~Al2Si2O5(OH)4 |
| Molecular Weight | N/A |
| SMILES | O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 2507000000 |
| Tariff Code | 2507002000 |
Safety & GHS
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is kaolin primarily used for?
Kaolin is widely used in ceramics, paper coating, paints, plastics, and as a filler or extender in adhesives, rubber, and pharmaceuticals due to its fine particle size and inert properties.
What is the chemical formula and molecular weight of kaolin?
Kaolin has an approximate formula of **Al₂Si₂O₅(OH)₄**, but its molecular weight (MW) is not defined due to its variable water content and layered structure.
How should kaolin be stored?
Kaolin should be stored in a dry, well-ventilated area at ambient temperature, protected from moisture to prevent clumping or degradation.
What grades of kaolin does Molekula supply?
Molekula supplies **technical-grade kaolin** suitable for industrial applications, including ceramic, paper, and filler uses. Custom grades may be available upon request.
Can Molekula supply kaolin in bulk quantities?
Yes, Molekula can supply kaolin in bulk, with quantities tailored to meet your production needs—contact us for specific packaging options.
What documentation comes with a kaolin order?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and a packing list detailing product specifications and batch information.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.