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03584

Sigma-Aldrich

Kaolinite

natural

Synonym(s):

Aluminum silicate

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About This Item

Linear Formula:
Al2O3 · 2SiO2 · 2H2O
CAS Number:
1318-74-7
Molecular Weight:
258.16
EC Number:
215-286-4
MDL number:
MFCD00077645
UNSPSC Code:
12352106
PubChem Substance ID:
329747737
NACRES:
NA.22

form

powder

Quality Level

100

quality

natural

SMILES string

O=[Si]=O.O=[Al]O[Al]=O

InChI

1S/2Al.O2Si.3O/c;;1-3-2;;;

InChI key

HNPSIPDUKPIQMN-UHFFFAOYSA-N

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Application

Kaolinite can be used:
  • In the preparation of of polysialate polymers.
  • To prepare mullite composites by sintering kaolinite and alumina.
  • To synthesize microporous materials such as zeolite Linde Type A (LTA) and kaoline based silicoaluminophosphate (SAPO) molecular sieves.
  • In the synthesis of terbium pyridine-picolinate grafted kaoline, as a luminescent hybrid material.
  • As a filler and a coating pigment in the paper industry.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
BCCK5067
BCCL1959
BCCJ1019
BCCG9754
BCCG1724

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Engineered clay products for the paper industry.
Murray H H and Kogel J E
Applied Clay Science, 29(3-4), 199-206 (2005)
Synthesis, characterization and crystallization mechanism of SAPOs from natural kaolinite.
Wang T, et al.
Microporous and Mesoporous Materials : The Official Journal of the International Zeolite Association, 136(1-3), 138-147 (2010)
Nucleation and growth history of zeolite LTA synthesized from kaolinite by two different methods.
Rios C A, et al.
Applied Clay Science, 42(3-4), 446-454 (2009)
Synthesis and characterisation of materials based on inorganic polymers of alumina and silica: sodium polysialate polymers.
Barbosa V F, et al.
International Journal of Inorganic Materials, 2(4), 309-317 (2000)
Alexander Incledion et al.
Biomolecules, 11(1) (2021-01-21)
Clays attributed to have medicinal properties have been used since prehistoric times and are still used today as complementary medicines, which has given rise to unregulated "bioceutical" clays to treat skin conditions. Recently, clays with antibacterial characteristics have been proposed
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