KAOLIN | CAS No. 52624-41-6

KAOLIN

Basic Information

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CAS Number

52624-41-6

Molecular Formula

Al2H6O10Si2

Molecular Weight

276.18 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Heterocyclic Compounds

Pharmaceutical Chemicals Pharmaceutical Intermediates Heterocyclic Intermediates

Basic Physical Properties

Melting Point

1750 °C

SMILES

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O.O[Si]1(O[Al]2O[Al](O[Si](O2)(O)O)O1)O

InChI

InChI=1S/2Al.2H2O4Si.H2O.O/c;;2*1-5(2,3)4;;/h;;2*1-2H;1H2;/q2*+2;2*-2;;

InChIKey

CYJXEKAKKNYKNP-UHFFFAOYSA-N

LogP

-4.917899999999999

Topological Polar Surface Area

158.57 Å²

Hydrogen Bond Donor/Acceptor

6 / 10

Synonyms & References

English

ALUMINUM SILICATE, HYDRATED
ALUMINIUM SILICATE HYDRATED
KAOLIN MONOHYDRATE
kaolin
Aluminum silicate dihydrate
Aluminum silicate (hydrated)
Aluminum silicate hydroxide
Bolus alba
China clay
Kaolinite
Kaopectate
Porcelain clay

FAQ

What are the physical and chemical properties of KAOLIN (CAS: 52624-41-6)?

Kaolin is a natural clay mineral with a white, earthy appearance. Chemically, it is a hydrated aluminum silicate. Its crystalline form is monoclinic. Kaolin has a relatively low molecular weight (approximately 90 g/mol) and is insoluble in water but soluble in acids. It has low reactivity and is often used in the pharmaceutical and food industries due to its non-toxic and inert nature.

How is KAOLIN (CAS: 52624-41-6) typically synthesized?

KAOLIN is not typically synthesized but is naturally occurring as a clay mineral. However, synthetic kaolins can be produced by weathering silicate minerals or by hydrothermal synthesis using kaolinite clays as a starting material. These processes often involve heat treatment and water to transform other aluminosilicate minerals into the desired kaolin structure.

What industries use KAOLIN (CAS: 52624-41-6)?

KAOLIN is widely used in various industries. In pharmaceuticals, it is used as a tablet excipient and in the production of certain medications. In polymers, it acts as a filler and improves properties like opacity and barrier. It is also used in sensors and semiconductors for its electrical and thermal properties, and in the paper industry as a filler and coating agent.

What precautions should be taken when handling KAOLIN (CAS: 52624-41-6)?

When handling KAOLIN, basic safety precautions should be followed. Wear protective equipment such as gloves and safety glasses. Store in a dry, cool place to prevent moisture absorption. In case of a spill, use appropriate protective equipment and clean up according to standard procedures. Always refer to the Safety Data Sheet (SDS) for specific handling instructions and emergency procedures.