Our customer service representatives are available 24 hours a day, from Monday to Sunday.
| Catalog Number | CI-SC-0054 |
| Product Name | Kaolin |
| CAS | 1332-58-7 |
| Structure |  |
| Synonyms | Bolus, Aluminum silicate hydroxide, Hydrated aluminum silicate, Kaolin |
| Description | USP grade, pure natural mineral (anhydrous aluminum silicate) composed of kaolinite with low iron content (synonyms: china clay, nacrite, kaolinite, calcined kaolin, metakaolin). Consists of 44-46% silicon dioxide, 37-40% aluminum oxide, 0.2-0.4% magnesium oxide, 0.03-0.06% calcium oxide, 0.2-0.4% ferric oxide, and 1.5-2.0% titanium dioxide. Average particle size 1.0-1.4 micrometers. |
| Molecular Weight | 258.16 g/mol |
| Molecular Formula | ~Al2Si2O5(OH)4 |
| Purity | 99%, 99.9%, 99.99%, 99.999% |
| Density | 1.8-2.6 g/mL |
| Solubility | Water-insoluble |
| Appearance | Off-white fine powder, odorless |
| Application | Face powders, face masks, creams and lotions for oily skin, bath powders, foundation cake makeup, dry rouges, deodorants, soaps. |
| Storage | Store in a closed container at a dry place at room temperature |
| Composition | Kaolin |
| Features And Benefits | Great covering ability and anti-caking propertiesAble to absorb fats from the skinImproves the appearance of enlarged poresHelps clear up breakouts and blemished skinHas soothing properties (ideal for sensitive skin) |
| GMO | GMO-free (does not contain plant-derived components) |
| HS Code | 2507000000 |
| INCI | Kaolin |
| Manufacture | Kaolin is a hydrated aluminum silicate obtained by mining naturally occurring mineral deposits. Such deposits are purified by a dry process involving crushing, drying, pulverizing and classifying and a wet processes involving formation of a kaolin slurry followed by selective flocculation. |
| pH | 3.5-5.0 (20% in water) |
| Preservation | Preservative-free |
| Purity Grade | USP Grade |
| Raw Material Source | Kaolin-containing mineral deposits |
| Uses | Can be added to formulas as is, usual final concentration 4-20%. For external use only. |
Kaolin, often referred to as white clay or bolus alba, is a versatile natural mineral known for its high mineral content and unique properties. This anhydrous aluminum silicate features excellent absorbency and is rich in essential minerals such as silica, iron, magnesium, and calcium. Kaolin is an odorless, fine off-white powder that effectively cleanses and deodorizes the skin. It contains exfoliating granules that help remove dry or dead skin cells, enhancing the skin's radiance. When applied, kaolin penetrates the pores, and as it dries, it contracts to draw out impurities and excess oils, making it ideal for refining pores and addressing breakouts. Known for its soothing properties, kaolin is especially suitable for sensitive skin and is commonly utilized in a range of products, including face powders, facemasks, bath powders, foundation makeup, dry rouges, deodorants, and soaps, typically at concentrations ranging from 4 to 20%.
Martsouka, Fotini, et al. Materials, 2021, 14(5), 1173.
Copper- and zinc-ion-modified pharmaceutical pastes were successfully prepared by chemical modification of kaolin and talc via cation exchange method, and their antibacterial activity was evaluated to explore their cosmetic and medicinal potential. Research results show that copper-containing kaolin shows significant effects against bacteria and mold, while zinc-containing talc performs well against yeast.
Preparation procedure of modified kaolin and talc
· Saturated solutions were created by dissolving the molar mass of each chloride compound (CuCl2 and ZnCl2) in 1 L of distilled water. By immersing the clay minerals (kaolinite, talc) in these solutions, chemical modification was attained. This resulted in the formation of Cu-kaolinite (CuK), Zn-kaolinite (ZnK), Cu-talc (CuT), and Zn-talc (ZnT) composite materials.
· The process involved stirring each sample for 10 minutes using a magnetic stirrer, followed by centrifugation at 2800 rpm for 10 minutes. The separated chloride liquid was removed through filtration, and fresh chloride solution was added. This cycle of stirring, centrifugation, and refilling was repeated five times to ensure that most, if not all, of the exchangeable cations were replaced by Cu and Zn cations.
· A final rinse with distilled water was conducted to eliminate excess chlorine. Subsequently, the samples were dried in an oven at 50 °C for two days and then ground into fine powder using an agate mortar and pestle.
Sukeksi, L., et al. Journal of Physics: Conference Series. 2020, 1542, 012046.
Kaolin can be used as an active ingredient in cosmetics due to its strong adsorption capacity for substances such as oils and toxins. This work studies the effect of kaolin addition and saponification temperature on the produced solid soap. The results show that the addition of kaolin affects the properties of the obtained solid soap (water content, free fatty acids, acidity, foam stability and hardness).
Preparation procedure of solid soap with kaolin
· Coconut oil, sodium hydroxide, distilled water, and kaolin were the primary components utilized in the production of soap. The saponification process was conducted in a glass beaker at temperatures ranging from 50ºC to 80ºC, with varying levels of kaolin consistency at 10%, 12.5%, 15%, 17.5%, and 20%. The reaction lasted for 10 minutes using a ratio of 7 parts coconut oil to 3 parts 35% NaOH (w/v), 100 mesh kaolin particle size, and a constant stirring speed of 250 rpm.
· Increasing the kaolin consistency resulted in a rise in water content within the soap formulation. The introduction of kaolin and elevation of reaction temperature led to a decrease in free fatty acid levels. Moreover, the pH of the soap increased with higher kaolin consistency and reaction temperature. The foam stability value did not exhibit significant variance with the amount of kaolin added to the soap. Within the temperature range tested, the increase in hardness was directly proportional to the rise in kaolin dosage, with optimal soap hardness achieved at a kaolin consistency of 15%.
What is Kaolin and what are its primary properties?
Kaolin, also known as "white clay" or "bolus alba," is a medicinal clay known for its high mineral content, hydrating, and matting properties. It is a pure natural mineral composed of anhydrous aluminum silicate, primarily kaolinite, with low iron content. Kaolin is characterized by its natural absorbency, making it an effective ingredient for cleansing and deodorizing the skin.
What minerals are present in Kaolin?
Kaolin is rich in natural minerals, including silica, iron, magnesium, and calcium. These minerals contribute to its effectiveness in skincare and cosmetic applications.
How does Kaolin benefit the skin when used in skincare products?
Kaolin provides multiple benefits to the skin. It helps lift impurities from the pores by absorbing dirt and excess fats as it dries, refining pores and soothing the skin, particularly beneficial for those with sensitive skin. Additionally, Kaolin has exfoliating properties, as its granules can gently lift and remove dry or dead skin cells, leaving the skin looking and feeling more radiant.
In what types of products is Kaolin typically used?
Kaolin is used in a variety of cosmetic and skincare products, including face powders, facemasks, bath powders, foundation cake makeup, dry rouges, deodorants, and soaps. It is typically added at usage levels ranging from 4-20%, depending on the product formulation and desired effect.
Can Kaolin be used on sensitive skin types?
Yes, Kaolin is ideal for sensitive skin due to its soothing properties. It effectively absorbs impurities and fats without causing irritation, making it a gentle option for cleansing and refining the skin.
If you have any questions, please contact us. You will get a satisfactory answer.
