KAOLIN- ▸ Paper: Coating pigment and filler for paper and board.
- ▸ Ceramics: Body and glaze raw material for tiles, porcelain and sanitary ware.
- ▸ Paint extender: Inert extender pigment in coatings.
- ▸ Rubber/plastics filler: Functional filler in polymer compounds.
- ▸ Refractories/fiberglass: Raw material for refractory products and glass fiber.
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Kaolin (china clay, CAS 1332-58-7) is a hydrated aluminum silicate clay valued for its fine particle size, brightness and chemical inertness. Its largest uses are as a coating pigment and filler in paper and as a body and glaze raw material in ceramics, tiles and sanitary ware. It also serves as an extender in paints, a filler in rubber and plastics, and a raw material for refractory products and fiberglass.
Frequently Asked Questions
What is kaolin used for?
Kaolin (china clay, CAS 1332-58-7) is a hydrated aluminum silicate clay valued for fine particle size, brightness, and chemical inertness. Its largest uses are as a coating pigment and filler in paper and as a body and glaze raw material in ceramics, tiles, and sanitary ware. It also serves as an extender in paints, a filler in rubber and plastics, and a raw material for refractories and fiberglass.
What is the difference between standard and calcined kaolin?
Standard (hydrous) kaolin retains its bound water, while calcined kaolin is heat-treated to drive off that water, increasing brightness, opacity, and abrasion. Calcined grades are often used as functional extenders in paints and as fillers in plastics and rubber. Available grades are confirmed on the specification sheet and Certificate of Analysis.
What is the chemical identity and formula of kaolin?
Kaolin is a hydrated aluminum silicate clay, CAS 1332-58-7, based on the mineral kaolinite (idealized Al2Si2O5(OH)4). It is prized for chemical inertness, fine particle size, and brightness. Lot-specific brightness, particle size, and specification are confirmed on the Certificate of Analysis.
What is the HS code for kaolin?
The HS classification is 2507.00 (kaolin and other kaolinic clays, whether or not calcined). The CAS number is 1332-58-7. We provide a CoA and SDS with each lot.
How is kaolin supplied in bulk and what is the cost?
We supply kaolin in bulk industrial packaging such as bags, supersacks, and bulk loads, with a CoA and SDS per lot. Pricing is grade-, volume-, and packaging-dependent; request a current bulk quote with your target quantity, grade (hydrous or calcined), and ship-to.
