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Kaolin, also known as china clay, is a fine white clay primarily composed of kaolinite, a layered silicate mineral. It is formed from the weathering of feldspar and is characterized by its softness and plasticity when wet. Kaolin is widely used in various industrial applications due to its excellent properties such as whiteness, low shrinkage, and high viscosity. It is commonly utilized in the production of ceramics, paper, rubber, and plastics.
| Chemical composition | Primarily kaolinite (Al2Si2O5(OH)4) |
| Color | White to off-white |
| Particle size | Typically 1 to 2 microns |
| Moisture content | Up to 14% |
| pH level | 4.5 to 6.5 |
When selecting kaolin, buyers should consider the specific grade required for their application, as different grades may have varying levels of purity and particle size. It is also important to specify the desired moisture content and any necessary certifications for environmental or safety standards. Quantities should be determined based on production needs, keeping in mind that bulk purchases may offer cost advantages.
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Kaolin is used in ceramics, paper, rubber, plastics, and cosmetics.
Yes, kaolin is generally considered safe for use in cosmetics.
Kaolin is known for its white color, low shrinkage, and high viscosity.
Kaolin is produced by mining and refining kaolinite clay.
Kaolin is sometimes used as an anti-caking agent in food products.
The typical particle size of kaolin ranges from 1 to 2 microns.
Some kaolin products may have environmental certifications; check with suppliers.