Diatomaceous Earth 50 lb – Export Grade

Diatomaceous earth is a naturally occurring sedimentary rock composed of fossilized silica shells of diatoms. When milled to a fine powder, it consists primarily of amorphous silicon dioxide with trace amounts of aluminum oxide and iron oxide.

Typical Technical Specifications

Key Industrial Applications

In filtration systems, the porous structure provides a specific surface area typically ranging from 60 to 80 m²/g, enabling retention of particles as small as 1 µm while maintaining flow rates.

With a bulk density of 0.30–0.45 g/cm³ and porosity exceeding 60%, the material can absorb up to 80% of its weight in liquids such as oils and solvents, supporting spill‑containment applications.

For pest‑control formulations, silica particles with hardness of approximately 6.5 Mohs abrade insect cuticles, causing water loss and mortality without synthetic chemicals.

• Food‑grade filtration of beverages and oils
• Industrial wastewater treatment
• Automotive oil spill kits
• Stored‑product insect control in grain silos

Quality Control & Testing

Each batch undergoes sieve analysis to verify particle size distribution, ensuring the D50 remains within the 10–20 µm range for consistent filtration performance.

Loss on ignition (LOI) testing confirms that organic content is below 0.2%, which is necessary for applications requiring inertness.

Heavy‑metal screening (Pb, Cd, Hg, As) is performed using ICP‑OES to meet food‑grade and environmental limits (<10 ppm total).

Packaging & Export Logistics

The product is packed in 50 lb (22.7 kg) multi‑wall paper bags with an inner polyethylene liner to prevent moisture ingress during transit.

Bags are stacked on pallets (48" × 40") with a maximum height of 60 inches, secured with stretch film and corner boards to satisfy ISPM‑15 wood‑packaging standards.

A standard 20‑foot container holds approximately 16 pallets (768 bags), providing a net load of about 17,400 kg of diatomaceous earth.

Frequently Asked Questions

• Can the particle size be adjusted? Yes, milling parameters can be modified to produce finer or coarser grades upon request.
• What documentation accompanies export shipments? Each shipment includes a certificate of analysis, SDS, and origin declaration.
• Are food‑grade certifications available? The product can be supplied with FDA GRAS status and EU food‑contact compliance.
• What is the typical lead time for a 50‑lb bag order? Production lead time is 2–3 weeks after receipt of purchase order, subject to stock availability.

Please contact our export team for technical data sheets, sample requests, or to discuss specific grading requirements.