Description

Halloysite is a naturally occurring aluminosilicate clay mineral with a unique nanotubular structure, offering a high aspect ratio and significant surface area. This unique morphology provides exceptional value as a functional nanomaterial for enhancing mechanical properties, controlling release, and acting as a carrier or adsorbent. It is a critical raw material for industries seeking to improve product performance through nanotechnology. Key sectors utilizing Halloysite CAS NO 12298-43-0 include advanced polymer composites, controlled-release agriculture, pharmaceuticals, cosmetics, and environmental remediation.

Application

• Polymer Nanocomposites: Acts as a reinforcing filler in plastics, rubbers, and coatings to improve mechanical strength, thermal stability, and flame retardancy.
• Controlled Release Systems: The hollow nanotubular structure is ideal for encapsulating and slowly releasing active ingredients in agricultural chemicals (pesticides, herbicides) and pharmaceuticals.
• Cosmetics and Personal Care: Used as a natural carrier for vitamins, antioxidants, and UV filters in creams and lotions, and as an oil-absorbing agent.
• Catalyst Support: Provides a high-surface-area substrate for immobilizing catalytic agents in various chemical synthesis processes.
• Environmental Adsorption: Effective adsorbent for heavy metals, dyes, and other pollutants in wastewater treatment applications.
• Biomedical Engineering: Explored for drug delivery, tissue engineering scaffolds, and biosensing due to its biocompatibility and tunable surface chemistry.
• Ceramics and Refractories: Used as a raw material to modify the processing and final properties of ceramic bodies.
• Anticorrosive Coatings: The nanotubes can be loaded with corrosion inhibitors and incorporated into protective coatings for metals.

Basic Information

Product Name	Halloysite
CAS No.	12298-43-0
Molecular Formula	Al2Si2O5(OH)4 • nH2O
Molecular Weight	258.16 g/mol (anhydrous basis)
Synonyms	Halloysite Clay; Hydrated Halloysite; Endellite; Dragonite; Imogolite (related); Aluminum Silicate Hydroxide Hydrate; Nanoclay; Halloysite Nanotubes (HNTs)
EINECS	235-558-6

Quality Control

Our Halloysite is sourced and processed under strict quality protocols to ensure batch-to-batch consistency for industrial and advanced material applications. Quality is verified through a suite of analytical tests including mineralogical purity, particle size distribution (PSD), specific surface area (BET), and chemical composition. While we offer standard technical and purified grades, specifications can be adjusted based on application needs. A Certificate of Analysis (COA) detailing key parameters is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. This material is hygroscopic (moisture-sensitive). Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep the container tightly sealed when not in use to prevent moisture absorption, which can affect flow properties and performance.

Specification

Item	Specification
Appearance	White to pale cream powder
Mineralogical Purity (Halloysite)	> 95 %
Loss on Drying (LOD)	< 15 %
pH (in water suspension)	5.0 - 7.0
Specific Surface Area (BET)	40 - 70 m²/g
Average Particle Size (D50)	0.5 - 2.0 µm
Nanotube Outer Diameter	50 - 100 nm
Nanotube Length	0.5 - 2.0 µm
SiO2 Content	40 - 50 %
Al2O3 Content	30 - 40 %
Heavy Metals (as Pb)	< 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.