MilliporeSigma
All Photos(4)

685445

Sigma-Aldrich

Halloysite nanoclay

Sign Into View Organizational & Contract Pricing

Select a Size

Synonym(s):
Kaolin clay
Linear Formula:
Al2Si2O5(OH)4 · 2 H2O
CAS Number:
Molecular Weight:
294.19
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23

form

nanopowder

diam. × L

30-70 nm × 1-3 μm , nanotube

surface area

64 m2/g

color

75-96, Hunter Brightness

refractive index

n20/D 1.54

pore size

1.26-1.34 mL/g pore volume

capacity

8.0 meq/g cation exchange capacity

density

2.53 (true specific gravity)

SMILES string

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

InChI

1S/2Al.H4O7Si2.2H2O.2O/c;;1-8(2,3)7-9(4,5)6;;;;/h;;1-2,4-5H;2*1H2;;/q2*+1;-2;;;;

InChI key

HEFIDAICLOZRRO-UHFFFAOYSA-N

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
682624682632682659
Halloysite nanoclay

Sigma-Aldrich

685445

Halloysite nanoclay

density

2.53 (true specific gravity)

density

-

density

-

density

-

Quality Level

100

Quality Level

200

Quality Level

200

Quality Level

200

diam. × L

30-70 nm × 1-3 μm , nanotube

diam. × L

-

diam. × L

-

diam. × L

-

surface area

64 m2/g

surface area

-

surface area

-

surface area

-

color

75-96, Hunter Brightness

color

-

color

-

color

-

General description

Halloysite nanoclay has a tube like morphology. It shows low electrical, thermal conductivity and strong hydrogen interactions, on account of which the inner hydroxyl groups show greater stability than the surface hydroxyl groups in halloysite. The loss of hole water occurs at nearly 300 °C.
Similar to montmorillonite, halloysite consists of two layers of aluminosilicate in 1:1 Al:Si ratio. Significant improvements in thermal, mechanical properties have been reported on addition of halloysite nanotubes in polymer composites.

Application

Halloysite is frequently used as a reinforcement in various nanocomposites, some of which are listed here:
Isotactic propylene-halloysite nanocomposites.
Alloy composites by electroless/ autocatalytic deposition.
Poly(butylene terephthalate) (PBT) composites.
Zinc–halloysite nanotube (HNT) composite coatings.
Halloysite nanotube–hydroxyapatite–hyaluronic acid films.
Halloysite combined with polyamide, polypropylene, poly(ε-caprolactone) and fluroelastomers.
Its tube like morphology, high aspect ratio, and low percolation enables interesting applications as reinforcements in nanocomposites.

Legal Information

Product of Applied Minerals, Inc. Customers may obtain additional technical support and purchase commercial quantities at appliedminerals.com

Storage Class Code

11 - Combustible Solids

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Documents related to the products that you have purchased in the past have been gathered in the Document Library for your convenience.

Visit the Document Library

Difficulty Finding Your Product Or Lot/Batch Number?

Product numbers are combined with Pack Sizes/Quantity when displayed on the website (example: T1503-25G). Please make sure you enter ONLY the product number in the Product Number field (example: T1503).

Example:

T1503
Product Number
-
25G
Pack Size/Quantity

Additional examples:

705578-5MG-PW

PL860-CGA/SHF-1EA

MMYOMAG-74K-13

1000309185

enter as 1.000309185)

Having trouble? Feel free to contact Technical Service for assistance.

Lot and Batch Numbers can be found on a product's label following the words 'Lot' or 'Batch'.

Aldrich Products

  • For a lot number such as TO09019TO, enter it as 09019TO (without the first two letters 'TO').

  • For a lot number with a filling-code such as 05427ES-021, enter it as 05427ES (without the filling-code '-021').

  • For a lot number with a filling-code such as STBB0728K9, enter it as STBB0728 without the filling-code 'K9'.

Not Finding What You Are Looking For?

In some cases, a COA may not be available online. If your search was unable to find the COA you can request one.

Request COA

Customers Also Viewed

Slide 1 of 8

1 of 8

Sigma-Aldrich

Sigma-Aldrich

18616

Kaolin

Sigma-Aldrich

Sigma-Aldrich

60609

Kaolin

Sepiolite powder

Sigma-Aldrich

70253

Sepiolite

Sigma-Aldrich

Sigma-Aldrich

69866

Montmorillonite

Sigma-Aldrich

Sigma-Aldrich

69904

Montmorillonite

Montmorillonite K 10

Sigma-Aldrich

281522

Montmorillonite K 10

Bentonite

Sigma-Aldrich

285234

Bentonite

vibrant-m

BCR461

Clay (F)

Development of high performance electroless Ni?P?HNT composite coatings
Ranganatha S, et al.
Applied Surface Science, 263, 149-156 (2012)
Sandra Rojas-Lema et al.
Molecules (Basel, Switzerland), 25(8) (2020-04-29)
In this work, films of polylactide (PLA) prepared by extrusion and thermo-compression were plasticized with oligomer of lactic acid (OLA) at contents of 5, 10, and 20 wt%. The PLA sample containing 20 wt% of OLA was also reinforced with
S R Levis et al.
International journal of pharmaceutics, 243(1-2), 125-134 (2002-08-15)
Halloysite supplied from New Zealand was shown by electron microscopy to be composed mainly of hollow microtubules having typical dimensions of 2-3 microm long and 0.3/0.1 microm outer/inner diameter. Aggregates of microtubules, double tubules and occasional split or partially unrolled
Raman spectroscopy of isotactic polypropylene-halloysite nanocomposites
Ibrahim EE, et al.
Journal of Nanomaterials, 12 (2012)
Du M. et al.
Eur. Polymer J., 42, 1362-1362 (2006)

Articles

Halloysite Nanotubes Applications in Nanomaterials Research

Halloysite Nanotubes in Nanomaterials Research. Halloysite, a naturally occurring aluminosilicate nanotube, has been undeservedly forgotten.

Nano Minerals: Nanoclays

Nanoclays are nanoparticles of layered mineral silicates. Montmorillonite, bentonite, and halloysite nanoclays and organoclays are used in polymer-clay nanocomposites, as rheology modifiers, and drug delivery carriers.

Phyllosilicate Clay Minerals: Principles and Applications

We have discussed shortly the applications of 1:1 and 2:1 phyllosilicate material in membrane technology, as well as the basic geometric understanding of their layered structures.

Graphene Nanoribbons: Production and Applications

Graphene is a one-atomic-layer thick two-dimensional material made of carbon atoms arranged in a honeycomb structure. Its fascinating electrical, optical, and mechanical properties ignited enormous interdisciplinary interest from the physics, chemistry, and materials science fields.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service