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

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

Application

Halloysite nanoclay is a versatile material derived from naturally occurring clays, featuring an alumina-silicate composition similar to that of kaolin. Distinguished by its unique tubular structure, halloysite nanoclay excels in absorbent, reinforcing, and bulking applications. Its excellent absorbency for water and oil makes it an ideal component in a variety of formulations, ranging from cosmetics to industrial applications. In cosmetic products, it enhances the texture and adherence while being easily removable, ensuring non-comedogenic properties. The material is also prized for its capacity to improve hardness and smoothness when used in composite materials. Given its purity and high fusion point, halloysite nanoclay serves as a valuable filler and strengthener in ceramics and refractories. With its ability to modify the physical properties of a product, halloysite nanoclay finds applications across various industries, acting as a crucial ingredient in creating high-performance, multifunctional products.

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

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