Kane Ara Sepahan supplies sodium bentonite in powder and granular form for drilling fluids, horizontal directional drilling (HDD), and other industrial applications. Mined and processed in Iran, our sodium bentonite is supplied to industrial buyers across Europe, the CIS, Turkey, and the Middle East, with specifications and packaging tailored to the intended application.
Raw Montmorillonite Clay
Sodium bentonite ore prior to drying and milling
Mined in Iran
With every shipment
Russia & CIS, Turkey, Europe, Middle East
Before bulk orders
Sodium bentonite is a swelling clay dominated by montmorillonite, capable of absorbing several times its dry weight in water and expanding into a dense, low-permeability barrier. This natural swelling behavior makes it the material of choice for pond sealing, landfill liners, foundry sand bonding, pelletizing, and civil engineering waterproofing.
Not all bentonite behaves the same way. Sodium bentonite swells far more than other bentonite types, making it the preferred choice wherever high sealing performance is needed with less material..
Within sodium bentonite itself, granular sodium bentonite clay spreads evenly and is easier to control on-site — ideal for pond and landfill work — while powder grades hydrate faster and suit processes such as foundry molding sand and pelletizing, where fine, uniform blending matters.
Kane Ara’s sodium bentonite clay carries a high montmorillonite content and a consistent swelling index across every batch. That means the same sealing performance shipment after shipment, with no re-testing and no surprises on-site.
For contractors, that means fewer failed liners and less rework; for foundries, more stable mold quality and fewer rejected castings. If sealing strength is your priority, sodium bentonite is the stronger choice; if you need faster hydration with lower swelling, calcium bentonite is worth comparing.
Physical & Chemical Properties of Sodium Bentonite
Parameter | Typical Value |
Montmorillonite Content | ≥ 85% |
Swelling Index (Free Swell) | ≥ 24 ml/2g |
Moisture Content (as packed) | ≤ 12% |
pH (10% suspension) | 8.5 – 10.5 |
Bulk Density | 700 – 900 kg/m³ |
Particle Size – Granular Grade | 0.5 – 2.36 mm (8–30 mesh) |
Particle Size – Powder Grade | ≥ 95% passing 200 mesh (74 µm) |
Color | Greyish white to light beige |
Why Choose Kane Ara as Your Sodium Bentonite Supplier?
COA, TDS & MSDS prepared and shipped with every order, alongside the CAS number and HS code.
Verify grade and form before committing to a full shipment — arranged directly with the sales team.
Mined and processed at one facility, so grade doesn't drift between batches or shipments.
Payment terms upon agreement.
Support for international transactions.
Export to Russia & CIS countries.
Experience across international markets.
Fast & Professional Response · Transparent Contracts
Quoted against your grade, form, volume, Incoterm and destination port — no fixed catalogue rate.
As one of the largest direct producers and exporters of sodium bentonite, Kane Ara ships in bulk to manufacturers, distributors, and contractors worldwide, with orders starting at 20 tons.
Whether you need granular sodium bentonite clay for a pond-sealing project or a bentonite powder for foundry and pelletizing lines, tell us your application and destination port, and we will recommend the right specification and confirm the lead time.
Response within 1 business day
