Best Kaolin Clay CAS 1332-58-7 for Skin Care And Industry

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Kaolin Clay

Products Description

Name: Kaolin Clay Powder

Cas: 1332-58-7

Purity: 99%min


Basic Info:







Stock Availability

In stock

Brand Name

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Product Introduction:

Kaolin Clay is a non-metallic mineral, a kind of clay and clay rock dominated by kaolinite clay minerals. Because of its whiteness and fineness, it is also called Baiyun soil.

Kaolin Clay powder pure kaolin is white, delicate, soft, with excellent plasticity and fire resistance, as well as other physical and chemical properties.

Its mineral composition is mainly composed of kaolinite, halloysite, hydromica, illite, montmorillonite, quartz, feldspar and other minerals.

Kaolin Clay has a wide range of uses, mainly used in papermaking, ceramics and refractory materials, followed by coatings, rubber fillers, enamel glazes and white cement raw materials.

A small amount is used in plastics, paints, paints, grinding stones, pencils, daily necessities, soaps, etc. Insecticide, medicine, textile, petroleum, chemical, building materials, national defense and other industrial sectors.

Product Nature:

  • Melting point: 1750°C
  • Density: 2,6g/cm3
  • Refractive index: 1.6200
  • Form: Powder
  • PH value: 6-7(50g/l,H2O,20℃)(slurry)


Product NameKaolin Clay Powder
CAS No.1332-58-7
Appearance White crystalline powder
Content99% min
Shelf Life2 years
Packing1kg/bag,25kg/bag or as your requirements

Product function:

Kaolin Clay is mainly used in the production of daily ceramics, industrial ceramics, building and sanitary ceramics and refractory materials. It is also used as a filler or white pigment in papermaking, construction, coatings, rubber, plastics, and fibers.

  • Used in the paper industry
    • The international market for Kaolin Clay powder is relatively prosperous, with sales exceeding that of ceramics, rubber, coatings, plastics, refractory materials and other industries.
    • In pulp and paper, Kaolin Clay usually reacts little with its components, has strong stability, and can remain intact on paper fibers.
    • At the same time, the Kaolin Clay powder has fine particle size and strong fluidity. In mechanized production, it can ensure that the thickness of the paper coating is uniform. Kaolin Clay can fill the gaps between paper fibers, increase the density of the paper, reduce the transparency of the paper, and improve the flatness of the paper. The ability of paper to absorb ink.


  • Used in the ceramic industry
    • Kaolin Clay powder is used faster than other industries, and the dosage is also high, usually accounting for 20% to 30% of the prescription. Kaolin Clay can increase the content of Al2O3 in ceramics, which is conducive to the formation of mullite, thereby improving the stability and sintering strength of ceramics.
    • In ceramic firing, Kaolin Clay is decomposed into mullite to form a green body frame. The process expands the firing temperature range, reduces the deformation of the ceramic body, and improves the whiteness of the ceramic. ..
    • At the same time, Kaolin Clay powder itself has the characteristics of adhesion, plasticity, adhesion and suspension, which can improve the formability of porcelain glaze, and can be used for car blank processing, grouting and ceramic molding.


  • Used in the rubber industry
    • Kaolin Clay powder is filled in the colloidal mixture to increase the abrasion resistance, chemical stability, mechanical strength of the rubber, prolong the vulcanization time, adjust the rubber mixing, rheology, vulcanization properties and the viscosity of the unvulcanized product. Improve. Prevent extrusion, depression, sagging, flat tube, deformation, etc.
    • The permeability, water resistance, chemical activity, fire resistance and flame retardancy of rubber products have also been significantly improved.
    • At the same time, Kaolin Clay powder as a filler can also reduce the amount of other raw materials in the rubber. This can significantly reduce rubber manufacturing costs without significantly affecting rubber properties.


  • Used in the plastic industry
    • As a plastic filler, Kaolin Clay powder makes plastic products smooth in size, accurate in size, resistant to chemical corrosion, reduces thermal shrinkage and thermal cracking, and facilitates polishing and polishing processes.


  • Applied in the coating industry
    • Kaolin Clay powder is used as a filler in coatings and paints because of its high whiteness, low cost, good fluidity, stable chemical properties, and large surface cation exchange capacity. Kaolin Clay used in coatings generally includes water-washed superfine Kaolin Clay and calcined superfine Kaolin Clay. Two kinds of fine Kaolin Clay.
    • Among them, calcined Kaolin Clay has just been researched and developed in recent years. As a new type of functional additive, it has good whiteness, coverage, softness, abrasion resistance, opacity, no shrinkage, etc., and the coating maintains good color and luster. And stability.
    • Kaolin Clay powder itself is white and has no hiding power even as an additive. However, if it is added to white paint or paint in an appropriate amount, the gloss and hiding power can be improved.


  • Used as a refractory material
    • Kaolin Clay has high whiteness, fine powder, and good suspension. It is mainly used for refractories, semi-acid refractories, special refractories (crucibles for smelting, optical glass, glass fiber control, etc.).

refractory material

  • Applied in agriculture
    • Kaolin Clay is diluted and applied to plants to prevent and reduce pests and diseases.
    • Spraying apples, pears and other fruit trees with Kaolin Clay powder solution can reduce the heat radiation of strong sunlight in summer to the trees, reduce water evaporation, and increase fruit yield.
    • Kaolin Clay is used for pesticides, which can reduce the amount of pesticides, prolong the use time of pesticides, reduce costs, and significantly reduce pesticide residues.


  • Application in the cosmetics industry
    • Kaolin Clay powder has good adhesion to the skin, inhibits sebum secretion and sweat absorption. It is mainly used in cosmetics as an important ingredient in various cosmetics such as pressed powder, foundation, eye shadow, talcum powder, loose powder, blush, etc. it has been.
    • In recent years, many women have requested Kaolin Clay masks. It has a strong oil absorption and oil resistance function, which can deeply cleanse the skin and absorb the oil and dirt accumulated in the pores. Remember, sensitive skin is not suitable for damaging the stratum corneum.


  • Other industry
    • With the advancement of science and technology in recent years, Kaolin Clay powder has been widely used in construction, textile, wire and cable, ink, food, medical, and petroleum refining industries.

Process characteristics of Kaolin Clay:

  • Brightness

    • Whiteness is one of the main parameters of Kaolin process performance, and high-purity Kaolin Clay powder is white.

    • The whiteness of Kaolin Clay is divided into natural whiteness and whiteness after calcination.

    • For ceramic raw materials, the whiteness after calcining is very important. The higher the calcining whiteness, the better the quality.

  • Particle size distribution

    • Particle size distribution refers to the percentage of natural Kaolin powder particles in a specific continuous range of different particle sizes (expressed in millimeters or micrometers).

    • The particle size distribution characteristics of Kaolin powder are very important for the selectivity of ore and process applications. The particle size has a great influence on its plasticity, mud viscosity, ion exchange capacity, molding performance, drying performance and sintering performance. Increase.

    • Kaolin Clay mines require technical treatment, and the ease of treatment is one of the criteria for evaluating the quality of the ore.

  • Plasticity

    • The mud formed by the combination of Kaolin Clay powder and water can be deformed under the action of external force, and this deformation plasticity can be maintained even after the external force is removed.

    • Plasticity is the basis of the Kaolin molding process in the ceramic body, and it is also the key technical indicator of the process.

    • Plasticity index and plasticity index are usually used to describe the size of plasticity.

    • The plasticity index is the percentage of the liquid limit water content of Kaolin Clay minus the plastic limit water content. That is, W plasticity index = 100 (W fluidity limit-W plasticity limit).

  • viscosity

    • Combination refers to the ability of Kaolin Clay to combine with non-plastic raw materials to form a plastic mud mass and have a certain dry strength.

    • The binding capacity is determined by adding standard quartz sand to Kaolin Clay (its mass composition is 70%, the particle size is 0.25 to 0.15 and 30%, and the particle size is 0.15 to 0.09 mm). The maximum sand content that the plastic can maintain is determined by the amount and flexural strength of the mud after drying.

  • Drying performance

    • Drying performance refers to the performance of Kaolin Clay powder during the drying process, such as drying shrinkage, drying strength, drying sensitivity, etc.

    • Dry shrinkage refers to the shrinkage of Kaolin Clay powder after anhydrous drying.

  • Sinterability

    • Sinterability refers to the ability of the formed solid powdered Kaolin powder to be heated to close to its melting point (generally 1000°C or higher), the material spontaneously fills the gaps between particles and becomes dense.

    • The state with the smallest porosity and the largest density is called the sintered state, and the corresponding temperature is called the sintering temperature.

    • As the heating continues, the liquid phase in the sample rises and the sample begins to deform. The temperature at this time is called the transition temperature.

  • Firing shrinkage

    • Sintering shrinkage refers to a series of physical and chemical changes (dehydration, decomposition, mullite formation, melting of fusible impurities to form glass that fills the gaps between particles, etc.) that occur during the calcination process of the dried Kaolin Clay blank. .direction. The properties that cause product shrinkage can also be divided into two types: linear shrinkage and body shrinkage.

  • Fire resistance

    • Fire resistance refers to the ability of Kaolin Clay powder to withstand high temperatures without melting. The temperature at which it softens and starts to melt in high-temperature operation is called fire resistance.

  • Suspension

    • Suspension and dispersibility refer to the characteristic that Kaolin Clay is not easy to settle when dispersed in water. Also called anti-aggregation. Generally speaking, the finer the particle size, the better the suspension.

      Kaolin Clay powder used in the enamel industry requires excellent suspension. Generally, the suspension performance of the sample after being dispersed in water for a period of time is used to determine its suspension performance.

  • Optionality

    • Optionality refers to the manual screening, mechanical treatment, and chemical treatment of Kaolin Clay ore to remove harmful impurities and achieve the quality that meets the performance requirements of the industry.

    • The selectivity of Kaolin Clay depends on the mineral composition, development state and particle size of harmful impurities. Quartz, feldspar, mica, iron, titanium minerals, etc. are all harmful impurities.

    • Kaolin Clay beneficiation mainly includes projects such as sand removal, iron removal, and sulfur removal.

  • Adsorption

    • Kaolin Clay powder has the ability to adsorb various ions and impurities in the surrounding medium, and has weak ion exchange performance in the solution.

    • The pros and cons of these properties mainly depend on the main mineral composition of Kaolin Clay.

  • Chemical stability

    • Kaolin Clay has strong acid resistance but poor alkali resistance. This feature can be used to synthesize molecular beams.

  • Electrical insulation

    • High-quality Kaolin Clay powder has excellent electrical insulation and can be used to make high-frequency porcelain and wireless porcelain. The level of electrical insulation can be measured by resistance to breakdown.


  1. Smothers, Ronald (12 December 1987). “White George clay turns into cash”The New York Times. Retrieved 19 January 2021.
  2. Gastuche MC, Fripiat JJ, DeKimpe C (1962). “La genèse des minéraux argileux de la famille du kaolin. I. – Aspect colloidal”. Colloque C.N.R.S105: 57–65.
  3. Wikipedia


Pre-Sales Service

* Timely reply and 24 hours online, the professional team will provide you with the most favorable prices and high-quality products.

* The sample supports testing and inspection.

* Each batch of products will be tested to ensure that its quality meets user needs.

*Packaging can also be made according to customer requirements.

*Any inquiries will be answered by our relevant personnel within 24 hours.

*We will provide you with commercial invoice, packing list, packing list, COA, health certificate and certificate of origin if you need it. If your market has other special requirements, please let us know.


After-Sales Service

*We will monitor the logistics information in real time and will share the information with you.

* You can consult us at any time if you have any questions about the product, and we will answer you in time.

*If you have any questions about the product, you can report it to us, we will deal with it in time for you, and the product can be returned.


1. ≤50kg, we recommend express delivery, usually called DDU service;

2. ≤500kg, air transportation is generally recommended, usually called FOB, CFR or CIF service;

3.>500kg, sea freight is generally recommended, usually called FOB, CFR or CIF service;

4. For high-value products, please choose air and express to ensure the safety of the products.


Do you accept sample order?

We will make samples before mass production. After the samples are approved by the department and users, we will start mass production. During the production process, we will carry out 100% inspection, and then carry out random inspection before packaging.

How to confirm whether the product quality meets our needs before placing an order?

You can consult us to get free samples of some products, you only need to pay the freight or arrange express delivery to us and get the samples. You can send us the product specifications and requirements you need, and we will manufacture products according to your requirements.

What’s your MOQ?

Our MOQ is 1kg. But usually we can also accept a smaller quantity, such as 100g, if you need it, provided that the sample fee is 100% paid.

Do you supply product report?

Yes. We’ll give you product analysis report before shipping.

  Is there a discount?

Different quantity has different discount.

Learn more about us

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Packaging and shipping

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Kaolin Clay