Description

Sepiolite CAS NO 15501-74-3 is a naturally occurring, fibrous clay mineral prized for its exceptional absorbency, high surface area, and rheological properties. This versatile material is critical for industrial processes requiring superior liquid retention, viscosity control, and adsorption. It serves as a key functional additive for manufacturers in sectors such as petrochemicals, agriculture, construction, and environmental remediation, where performance and reliability are paramount.

Application

• Absorbent & Carrier Agent: Widely used in pet litter, industrial spill control, and as a carrier for pesticides, fertilizers, and catalysts due to its high porosity.
• Rheology Modifier: Functions as a thixotropic thickener and suspending agent in paints, coatings, drilling muds, adhesives, and sealants.
• Environmental Remediation: Employed in filtration systems and as an adsorbent for heavy metals, oils, and organic contaminants in wastewater treatment.
• Catalyst & Catalyst Support: Provides a high-surface-area support material in various catalytic processes within the chemical industry.
• Construction Material: Used as an additive in cements, plasters, and mortars to improve workability, water retention, and mechanical properties.
• Animal Feed & Agriculture: Acts as an anti-caking agent in feed and a soil conditioner to improve moisture retention and nutrient delivery.
• Pharmaceutical & Cosmetics: Utilized as an excipient, desiccant, or viscosity-increasing agent in certain formulations.
• Specialty Polymers & Composites: Serves as a reinforcing filler and functional additive to enhance the properties of polymer matrices.

Basic Information

Product Name	Sepiolite
CAS No.	15501-74-3
Molecular Formula	Mg4Si6O15(OH)2·6H2O
Molecular Weight	~ 780.00 g/mol (variable)
Synonyms	Meerschaum; Hydrated Magnesium Silicate; Sepiolite Clay; Attapulgite (related mineral); Magnesia-Silica Gel; French Chalk (industrial); Sea Foam; Sepiolite Powder; Fibrous Clay
EINECS	239-555-1

Quality Control

Our Sepiolite is 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, specific surface area (BET), moisture content, pH, and viscosity measurements. Certificates of Analysis (COA) detailing these specifications are available upon request for every shipment, supporting compliance with relevant industrial and safety standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after each use to prevent moisture absorption, which can affect the product's flow properties and performance.

Specification

Item	Specification
Appearance	Off-white to light grey fine powder
Identification (IR)	Conforms to standard
Loss on Drying	≤ 15.0 %
pH (10% suspension)	7.0 - 9.5
Particle Size (Passing 200 mesh)	≥ 90 %
Specific Surface Area (BET)	Contact for details
Bulk Density	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm

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