Milled sepiolite powder – ultra-fine micronized mineral

Fine Grade

Milled Sepiolite Powder

Name: Milled Sepiolite Powder
Brand: Sepiolite Mine
SKU: SM-MILL-001
Availability: InStock

Ultra-fine micronized powder with precisely controlled particle distribution. Engineered for paints, coatings, pharmaceuticals, cosmetics, and advanced ceramic applications.

5–200μm

Particle Size

300m²/g

Surface Area

99.5%

Purity

Bulk Pricing In Stock

TBD

Price per metric ton · FOB Port of Mersin or FOB Samsun Port, Turkey · Contact for CIF pricing

Minimum order: 20 MT (one container)

Certificate of Analysis included with every shipment

Free samples available for qualified buyers

Request a Quote Request Sample

Product Overview

Precision-Milled for Advanced Applications

Our milled sepiolite powder is produced through a controlled grinding and classification process that reduces raw ore to ultra-fine particles while preserving the mineral's unique fibrous nanostructure. This structure is key to its exceptional rheological and adsorptive properties.

Available in multiple grades from 5 to 200 microns, the powder exhibits remarkably high specific surface area (200–300 m²/g) that provides outstanding thixotropic behavior in liquid systems. This makes it indispensable as a rheology modifier in paints, coatings, and adhesives.

In pharmaceutical and cosmetic applications, milled sepiolite serves as an excipient, carrier, and stabilizer. Its natural origin, chemical inertness, and high purity make it suitable for sensitive formulations where synthetic alternatives are undesirable.

Our milling facility operates with precision air classifiers that ensure tight particle size distribution. D50 and D90 values are verified on every batch, giving formulators the consistency they need for reproducible end products.

Technical Specifications

Product Form Fine Powder

Particle Size Range 5–200 μm

D50 (typical) 15–45 μm

Specific Surface Area 200–300 m²/g

MgO ≥ 18%

SiO₂ ≥ 54%

Moisture ≤ 10%

pH (10% suspension) 8.0–9.5

Color White

Oil Absorption 120–180 g/100g

Packaging 25kg Bags / 1 MT Bags

Delivery FOB Mersin / Samsun

Applications

Where Milled Sepiolite Powder Is Used

🎨

Paints & Coatings

Provides thixotropic behavior and anti-settling properties in water-based and solvent-based formulations. Prevents pigment sedimentation while maintaining easy brushability and spray application.

💊

Pharmaceuticals

Used as an excipient, controlled-release carrier, and stabilizer in tablet and suspension formulations. Natural origin and chemical inertness meet pharmaceutical-grade requirements.

🧴

Cosmetics & Personal Care

Serves as a natural thickener, oil absorber, and texture enhancer in creams, lotions, masks, and powder foundations. Gentle on skin with no irritation profile.

🏺

Ceramics & Refractories

Incorporated into ceramic bodies and glazes to improve green strength, reduce shrinkage, and enhance thermal shock resistance in kiln-fired products.

🧪

Adhesives & Sealants

Acts as a thixotropic agent in construction adhesives, tile mortars, and industrial sealants. Prevents sagging on vertical surfaces while maintaining workability.

🖌️

Plastics & Polymers

Used as a reinforcing filler in thermoplastics and thermosets. Improves dimensional stability, reduces warping, and can enhance flame retardancy in compound formulations.

Why Choose Us

Key Advantages

Controlled Particle Distribution

Precision air classification ensures tight D50 and D90 values batch after batch, critical for reproducible formulations in paints and pharma.

Exceptional Surface Area

At 200–300 m²/g, our milled powder offers one of the highest surface areas among natural minerals — essential for rheology modification.

Chemical Inertness

Sepiolite powder is chemically stable across pH 3–11, compatible with most formulation systems, and does not react with active ingredients.

Natural & Sustainable

A naturally occurring mineral requiring no chemical synthesis — meeting growing demand for clean-label and green-chemistry ingredients.

Versatile Particle Grades

From 5μm ultra-fine for pharma to 200μm coarse for construction — we produce the exact grade your application demands.

Common Questions

Frequently Asked Questions

What particle sizes are available for milled sepiolite?

We offer grades ranging from 5 to 200 microns. Standard grades include ultra-fine (D50: 15μm), fine (D50: 25μm), medium (D50: 45μm), and coarse (D50: 100μm+). Custom milling is available.

Is milled sepiolite suitable for food-contact applications?

Sepiolite is approved for food-contact use in many jurisdictions. We can provide specific compliance documentation upon request for your target market.

How does sepiolite powder compare to fumed silica as a thickener?

Sepiolite provides similar thixotropic performance at lower cost. It offers better suspension of heavy pigments and is easier to disperse without specialized equipment.

What is the shelf life of milled sepiolite powder?

When stored in sealed packaging in dry conditions, milled sepiolite has an indefinite shelf life. The mineral is chemically stable and does not degrade over time.

Can you provide samples for formulation testing?

Yes, we supply 1–5 kg samples of all powder grades with full technical data sheets. Contact our sales team to specify your required particle size.