CAS 1332-58-7 Halloysite Nanoclay - Materials / Alfa Chemistry

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Halloysite Nanoclay

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Catalog Number

ACM1332587-1

CAS Number

1332-58-7

Product Name

Halloysite Nanoclay

Structure

Category

Nanoclays; Nanopowders

Synonyms

Aluminum silicate hydroxide, Bolus, Hydrated aluminum silicate, Kaolin, µ-{Hydrogenato(2-)-?O [(hydroxy-?O)(oxo)silyl]silicate}(dioxo)dialuminium dihydrate, Aluminum, dioxo-µ-[silicic acid (H2SiO3)ato(2-)-?O, (hydroxy-?O)oxosilyl ester]-, hydrate (1:2)

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

294.19 g/mol

Molecular Formula

H4Al2O9Si2 · 2 H2O

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

Purity

99%, 99.9%, 99.99%, 99.999%

Density

1.8-2.6 g/cm³

Solubility

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

Appearance

white, grayish, or yellowish powder

Chemical Formula

Al2H4O9Si

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

Exact Mass

257.902462

Formal Charge

Heavy Atom Count

ICSC Number

1144

MDL Number

MFCD00062311

MeSH Entry Terms

Kaolin;Kaolinite

Monoisotopic Mass

257.902462

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