Description

Clays CAS NO 1302-87-0 are a diverse group of naturally occurring, fine-grained, layered aluminosilicate minerals with unique physical and chemical properties. Their high surface area, cation exchange capacity, and rheological characteristics make them indispensable functional additives across numerous industries. Key industrial sectors that rely on these versatile materials include ceramics, paints and coatings, drilling fluids, pharmaceuticals, and environmental remediation.

Application

• Ceramics & Refractories: As a primary plastic component in the formulation of porcelain, stoneware, bricks, and high-temperature refractory materials.
• Paints, Coatings & Inks: Functioning as rheology modifiers, suspending agents, and flatting agents to control viscosity, prevent settling, and modify gloss.
• Oil & Gas Drilling Fluids: Serving as a vital viscosifier and filtration control agent in water-based and synthetic-based drilling muds.
• Foundry & Metalcasting: Used as a bonding agent in green sand molds for metal casting processes.
• Pharmaceuticals & Cosmetics: Employed as adsorbents, suspending agents, viscosity enhancers, and opacifying agents in formulations.
• Agriculture & Horticulture: Improving soil structure, water retention, and nutrient delivery in soil conditioners and as carriers for pesticides and fertilizers.
• Environmental Remediation: Utilized for adsorption and containment of contaminants in wastewater treatment and landfill liners.
• Paper & Plastics: Acting as fillers, extenders, and processing aids to improve properties and reduce costs.

Basic Information

Product Name	Clays
CAS No.	1302-87-0
Molecular Formula	Variable (Al2O3·2SiO2·2H2O - approximate for Kaolinite)
Molecular Weight	Variable
Synonyms	Kaolin; China Clay; Hydrated Aluminum Silicate; Bentonite; Montmorillonite; Fuller's Earth; Attapulgite; Hectorite; Smectite; Ball Clay; Fire Clay; Aluminium Silicate Hydrate
EINECS	215-108-5 (for Kaolin)

Quality Control

Our clays are sourced and processed under strict quality protocols to ensure batch-to-batch consistency and performance. Quality is verified through a series of tests including particle size distribution, viscosity, moisture content, pH, and chemical composition. Certificates of Analysis (COA) are available for all shipments. We can supply grades compliant with various pharmacopeial (e.g., USP, Ph. Eur.), food (FCC), and industrial specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept in original, sealed packaging until use to prevent caking and degradation of performance properties.

Specification

Item	Specification
Appearance	Fine, colored powder (white, tan, gray, etc.)
Identification (XRD)	Conforms
Loss on Drying	< 10.0 %
Particle Size (e.g., < 45 μm)	> 90.0 %
pH (in water suspension)	4.0 - 10.0
Viscosity (e.g., 5% slurry)	Contact for details
Heavy Metals (as Pb)	< 20 ppm
Microbial Limits	Contact for details

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