Description

Sepiolite is a naturally occurring, hydrated magnesium silicate clay mineral prized for its high surface area, porosity, and exceptional absorption properties. This unique fibrous structure makes it a highly versatile industrial material for demanding applications requiring superior liquid and gas retention. It is a critical component for manufacturers in sectors such as pet care, agriculture, and industrial processing. Sepiolite CAS NO 18307-23-8 is supplied to meet the stringent quality and consistency requirements of global B2B clients.

Application

• Pet Care & Animal Feed: As a highly effective anti-caking agent and moisture absorber in cat litter, livestock feed, and pet bedding products.
• Agriculture & Horticulture: Used as a soil conditioner and carrier for pesticides, herbicides, and fertilizers to improve retention and controlled release.
• Industrial Absorbents & Spill Control: Employed in oil, grease, and chemical spill kits due to its high absorption capacity for non-polar liquids.
• Rheology Modifier: Acts as a thickening and thixotropic agent in paints, coatings, adhesives, and drilling muds to control viscosity and stability.
• Catalyst & Molecular Sieve Support: Serves as a porous, high-surface-area carrier material in various catalytic and filtration processes.
• Pharmaceutical & Cosmetic Applications: Utilized as an inert excipient, adsorbent, or viscosity-increasing agent in certain formulations.
• Environmental Remediation: Applied in wastewater treatment and gas purification for the adsorption of heavy metals and contaminants.

Basic Information

Product Name	Sepiolite
CAS No.	18307-23-8
Molecular Formula	Mg4Si6O15(OH)2·6H2O
Molecular Weight	~780 g/mol (variable)
Synonyms	Meerschaum; Hydrated Magnesium Silicate; Sepiolite Clay; Attapulgite (related mineral); Magnesia-Silica Gel; French Chalk (industrial); Light Magnesium Silicate; Fibrous Clay Mineral
EINECS	242-198-1

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 moisture content, absorption capacity, particle size distribution, and chemical composition. While available in various industrial and technical grades, our standard quality control ensures the product meets agreed-upon specifications. A Certificate of Analysis (COA) is provided with every shipment to guarantee compliance.

Storage

Preserve in a tightly closed container, protected from light. Due to its hygroscopic (moisture-sensitive) nature, 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 uptake and caking. Store away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white fibrous powder
Identification (IR)	Conforms to standard
Loss on Drying	< 12.0 %
pH (in suspension)	7.0 - 9.5
Oil Absorption (D281)	> 150 g/100g
Particle Size (Passing 200 mesh)	> 90 %
MgO Content	> 20.0 %
SiO2 Content	> 55.0 %

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