Product Name

  • Name

    Kaolin

  • EINECS 265-064-6
  • CAS No. 1332-58-7
  • Article Data2
  • CAS DataBase
  • Density 2.6 g/cm3
  • Solubility insoluble H2O, dilute acids and alkali hydroxides [HAW93]
  • Melting Point 1750 °C
  • Formula Al2O3.2SiO2.2H2O
  • Boiling Point
  • Molecular Weight 258.16
  • Flash Point
  • Transport Information
  • Appearance off-white powder
  • Safety 22-24/25
  • Risk Codes
  • Molecular Structure Molecular Structure of 1332-58-7 (Kaolin)
  • Hazard Symbols Xn
  • Synonyms Argilla;Kaoline;organically modified;Aluminum silicate hydroxide,Bolus,Hydrated aluminum si;CLAY;metahalloysite;Kaolin clay;Catalpo;Buca;Aluminum silicate hydroxide,Bolus,China clay;Kaolin(superfine);SP-33;BOLUS;REDCLAY;Kaowool;Aluminum silicate hydroxide,Bolus,Hydrated aluminum silicate;
  • PSA 114.43000
  • LogP -1.34560

Synthetic route

aluminium trichloride
7446-70-0

aluminium trichloride

phillipsite (K,Na,Ca)(Si,Al)8O16*6H2O#(K,Na,Ca)2(Si,Al)8O16*6H2O

phillipsite (K,Na,Ca)(Si,Al)8O16*6H2O#(K,Na,Ca)2(Si,Al)8O16*6H2O

A

kaolin
1332-58-7

kaolin

B

pyrophyllite

pyrophyllite

Conditions
ConditionsYield
In water High Pressure; phillipsite and an aq. soln. of AlCl3 is encapsulated in a gold bomb, heating to 300°C at a pressure of 30 MPa for 4 weeks, quenching to room temp.; XRD;
...Expand
kaolin
1332-58-7

kaolin

pseudoboehmite

pseudoboehmite

aluminum silicate

aluminum silicate

Conditions
ConditionsYield
mixt. (Al2Si2O5(OH)4:Al(OH)3 = 1:4) dry ground in aplanetary ball mill at a rate of 250 rpm for 5 min or 4 h; not isolated; detn. by NMR spectroscopy;
kaolin
1332-58-7

kaolin

sodium hydroxosodalite
12393-56-5

sodium hydroxosodalite

Conditions
ConditionsYield
With NaOH In water kaolinit sintered at 1723°K with NaOH, thermal treatment at 873 K for 3 h in vacuum;;
kaolin
1332-58-7

kaolin

potassium sulfate

potassium sulfate

potassium aluminium fluoride silicate KAl2(AlSi3)O10(OH)2#KAl2(AlSi3)O10F2, muscovite

potassium aluminium fluoride silicate KAl2(AlSi3)O10(OH)2#KAl2(AlSi3)O10F2, muscovite

Conditions
ConditionsYield
at 893 K for 143 h; stoichiometric mixture of K2SO4 and kaolinite;
kaolin
1332-58-7

kaolin

basic sodium hydro sodalite

basic sodium hydro sodalite

Conditions
ConditionsYield
With NaOH In water hydrothermal syntheses (autoclave), at 410°K, for several days;; MAS-NMR and X-Ray diffraction;;
kaolin
1332-58-7

kaolin

silica

silica

nitrogen
7727-37-9

nitrogen

silicon
7440-21-3

silicon

Al0.2N1.8O1.2Si1.8, low temperature

Al0.2N1.8O1.2Si1.8, low temperature

Conditions
ConditionsYield
In neat (no solvent, solid phase) milling kaolin, Si and SiO2 for 20 h in hexane, drying, pressing into disks (8 MPa), heating at 1270°C for 8 h (10% H2 in N2);
...Expand
kaolin
1332-58-7

kaolin

aluminum oxide
1333-84-2, 1344-28-1

aluminum oxide

talc

talc

titanium(IV) oxide

titanium(IV) oxide

O2Si(45.2),Al2O3(29.54),MgO(13.5),CaO(1.48),O2Ti(10.28) (W%)

O2Si(45.2),Al2O3(29.54),MgO(13.5),CaO(1.48),O2Ti(10.28) (W%)

Conditions
ConditionsYield
In neat (no solvent) mixing and homogenized, melting (Pt crucible, 1400 - 1450°C); pouring (metal plate), remelting (800°C, 1 h);
...Expand
kaolin
1332-58-7

kaolin

aluminum oxide
1333-84-2, 1344-28-1

aluminum oxide

talc

talc

titanium(IV) oxide

titanium(IV) oxide

O2Si(44.3),Al2O3(29),MgO(13.2),CaO(1.5),O2Ti(7),CeO2(5) (W%)

O2Si(44.3),Al2O3(29),MgO(13.2),CaO(1.5),O2Ti(7),CeO2(5) (W%)

Conditions
ConditionsYield
In neat (no solvent) mixing and homogenized, melting (Pt crucible, 1400 - 1450°C); pouring (metal plate), remelting (800°C, 1 h);
...Expand
kaolin
1332-58-7

kaolin

aluminum oxide
1333-84-2, 1344-28-1

aluminum oxide

talc

talc

titanium(IV) oxide

titanium(IV) oxide

O2Si(46.3),Al2O3(30.2),MgO(13.8),CaO(1.5),O2Ti(8.2) (W%)

O2Si(46.3),Al2O3(30.2),MgO(13.8),CaO(1.5),O2Ti(8.2) (W%)

Conditions
ConditionsYield
In neat (no solvent) mixing and homogenized, melting (Pt crucible, 1400 - 1450°C); pouring (metal plate), remelting (800°C, 1 h);
...Expand
kaolin
1332-58-7

kaolin

aluminum oxide
1333-84-2, 1344-28-1

aluminum oxide

talc

talc

titanium(IV) oxide

titanium(IV) oxide

O2Si(47.7),Al2O3(31.1),MgO(14.3),CaO(1.6),O2Ti(5.3) (W%)

O2Si(47.7),Al2O3(31.1),MgO(14.3),CaO(1.6),O2Ti(5.3) (W%)

Conditions
ConditionsYield
In neat (no solvent) mixing and homogenized, melting (Pt crucible, 1400 - 1450°C); pouring (metal plate), remelting (800°C, 1 h);
...Expand
kaolin
1332-58-7

kaolin

aluminum oxide
1333-84-2, 1344-28-1

aluminum oxide

talc

talc

titanium(IV) oxide

titanium(IV) oxide

O2Si(49.4),Al2O3(32.3),MgO(14.7),CaO(1.6),O2Ti(2) (W%)

O2Si(49.4),Al2O3(32.3),MgO(14.7),CaO(1.6),O2Ti(2) (W%)

Conditions
ConditionsYield
In neat (no solvent) mixing and homogenized, melting (Pt crucible, 1400 - 1450°C); pouring (metal plate), remelting (800°C, 1 h);
...Expand
kaolin
1332-58-7

kaolin

aluminum oxide
1333-84-2, 1344-28-1

aluminum oxide

talc

talc

O2Si(50.4),Al2O3(32.9),MgO(15),CaO(1.7) (W%)

O2Si(50.4),Al2O3(32.9),MgO(15),CaO(1.7) (W%)

Conditions
ConditionsYield
In neat (no solvent) mixing and homogenized, melting (Pt crucible, 1400 - 1450°C); pouring (metal plate), remelting (800°C, 1 h);
...Expand
kaolin
1332-58-7

kaolin

A

aluminum silicate

aluminum silicate

B

silica gel
112926-00-8, 7631-86-9

silica gel

Conditions
ConditionsYield
In neat (no solvent) byproducts: H2O; heating up to 1050°C; XRD;
kaolin
1332-58-7

kaolin

metakaolin

metakaolin

Conditions
ConditionsYield
In neat (no solvent, solid phase) dehydroxylation of kaolin by heating to 750°C and soaking at thistemperature for 24 h; XRD;
kaolin
1332-58-7

kaolin

sodium hydroxide
1310-73-2

sodium hydroxide

nepheline

nepheline

Conditions
ConditionsYield
In neat (no solvent, solid phase) mech. activation of dry mixt. in ring roller vibration mill for 5 min, heat treatment for 2 h at 600 °C; XRD;
kaolin
1332-58-7

kaolin

metakaolin

metakaolin

Conditions
ConditionsYield
In neat (no solvent, solid phase) calcined at 700 °C;

Kaolin Standards and Recommendations

OSHA PEL: TWA Total Dust: 10 mg/m3; Respirable Fraction: 5 mg/m3
ACGIH TLV: TWA 2 mg/m3; Respirable Fraction; Not Classifiable as a Human Carcinogen

Kaolin Specification

This chemical is called Kaolin, and it's also named as Clay (kaolin). With the molecular formula of Al2O3.2SiO2.2H2O, its product categories are UVCBs-Inorganic; Cosmetic Ingredients & Chemicals. The CAS registry number of this chemical is 1332-58-7. Additionally, it's insoluble in water, ethanol, acid and alkali. Keep it in the cool and dry place where the room is ventilated.

Preparation of this chemical: Take crystalline rocks of granite, gneiss and ground them into a muddy, washing the sand and processing them with dilute inorganic acid. After repeated washing and dehydration from the more than 330 °C, you will finally get the Kaolin.

Uses of Kaolin: The Kaolin is used on porcelain and ceramics, refractories, coatings, optical glass, all kinds of electromagnetic insulator. It's also used in paper, rubber, plastics industry and manufacturing special ceramic. Moreover, it play a role of separation and purification for serum coagulation.

When you are using Kaolin, please be cautious about it as the following: Do not breathe dust. Avoid contacting with skin and eyes.

You can still convert the following datas into molecular structure:
(1)InChI=1S/2Al.O5Si2.2H2O.2O/c;;1-6(2)5-7(3)4;;;;/h;;;2*1H2;;/q2*+1;-2;;;;;
(2)InChIKey=NLYAJNPCOHFWQQ-UHFFFAOYSA-N;
(3)Smiles[SiH](=O)(O[SiH](=O)O[AlH]=O)O[AlH]=O.O.O;

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