Kaolin - Materials / Alfa Chemistry

NAVIGATION

Tel:
Fax:
Address:
Email: For product inquiries, please use our online system or send an email to
To receive a copy of our product catalog, please contact us at

Home

Products

Glass and Ceramics

Ceramic Materials

Kaolin

PRICE INQUIRY

Catalog Number

ACMA00014239

Product Name

Kaolin

Category

Ceramic Materials

Description

Kaolin appears as odorless white to yellowish or grayish powder. Contains mainly the clay mineral kaolinite (Al2O3(SiO2)2(H₂O)2), a hydrous aluminosilicate. Kaolinite has mp 740-1785°C and density 2.65 g/cm³. Kaoline is insoluble in water but darkens and develops a earthy odor when wet.;DryPowder; DryPowder, Liquid; DryPowder, PelletsLargeCrystals, WetSolid; DryPowder, WetSolid; Liquid; OtherSolid; PelletsLargeCrystals; WetSolid; WetSolid, Liquid;WHITE POWDER.;White to yellowish or grayish powder. Odorless.;White to yellowish or grayish powder. [Note: When moistened, darkens & develops a clay-like odor.]

IUPAC Name

oxo-oxoalumanyloxy-[oxo(oxoalumanyloxy)silyl]oxysilane;dihydrate

Molecular Weight

258.16g/mol

Molecular Formula

H2Al2Si2O8H₂O;Al2Si2O5(OH)4;Al2H4O9Si2

Canonical SMILES

O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O

InChI

InChI=1S/2Al.O5Si2.2H₂O.2O/c;;1-6(2)5-7(3)4;;;;/h;;;2*1H2;;/q2*+1;-2;;;;

InChI Key

NLYAJNPCOHFWQQ-UHFFFAOYSA-N

Density

1.8 to 2.6 (NIOSH, 2016);2.65 g/cu cm;Relative density (water = 1): 2.6;1.8-2.6;1.8-2.6

Solubility

Insoluble (NIOSH, 2016);Insoluble in water;Insoluble in ether;Insoluble in dilute acids and alkali hydroxides;Solubility in water: insoluble;Insoluble

Color/Form

White or yellowish-white, earhty mass or white powder; unctuous when moist;White to yellowish or grayish powder [Note: When moistened, darkens...];Triclinic;White or near white ... pseudohexagonal flakes;Fine white to light-yellow powder

Complexity

167

Covalently-Bonded Unit Count

EC Number

310-194-1;619-103-2

Exact Mass

257.902462g/mol

Formal Charge

Heavy Atom Count

ICSC Number

1144

MeSH Entry Terms

Kaolin;Kaolinite

Monoisotopic Mass

257.902462g/mol

Odor

When moistened ... develops a clay-like odor

Other Experimental

Most kaolin clays have medium bulk density, low abrasion, and compatibility with majority of toxicants;Some grades have fine particle size, high adsorption, and suspension properties;Grindability good if active ingredient is high mp solid: oil adsorption 30-35 g/100 g oil; bulk density, 20-40 lb/cu foot; and pH, 5-6;Kaolin is a unique industrial mineral because it is chemically inert over a relatively wide pH range ... is white or near white; has a good covering or hiding power when used as a pigment or extender in coating and filling; is soft and nonabrasive; has low conductivity of both heat and electricity ...;Mohs Hardness = 2.3;Fusion temp = 1850 °C; Valley abrasion number: 4 to 10; dry brightness (1t 457 nm): 75-91%;A white-burning aluminum silicate that, due to its great purity, has a high fusion point and is the most refractory of all clays. ... Has high lubricity (slipperiness)

Refractive Index

Index of refraction = 1.549; 1.564; 1.565

Rotatable Bond Count

RTECS Number

GF1670500

Vapor Pressure

0 mm Hg (approx) (NIOSH, 2016);0 mmHg (approx);0 mmHg (approx)

Viscosity

Low viscosity

MSDS

Download MSDS

COA