Bentonite
HS code 250810
Bentonite builds viscosity and filter cake in water-based drilling muds and binds foundry sand. We trade micronised bentonite in API and OCMA grades, tested for yield, filtrate and fineness.
- Drilling mud viscosifier
- Foundry sand binder
- Civil sealing material
- Wastewater treatment agent

Specification
| Property | Unit | Requirement |
|---|---|---|
| Viscometer dial reading at 600 rpm | - | ≥ 30 |
| Yield point / plastic viscosity ratio | - | ≤ 3 |
| Residue on 200 mesh (75 µm) | wt % | ≤ 4 |
| Filtrate volume | ml | ≤ 15 |
| Moisture | wt % | ≤ 10 |
Typical values from current supply. The binding values are those on the contract and the Certificate of Analysis for each lot.
Available forms
- Micronised powder
Grades
- API grade
- OCMA grade
Packaging
- 1,000 kg jumbo bags
- Loaded in 20' and 40' containers
Main applications
- Oilfield drilling fluids
- Foundry and civil engineering
- Water treatment
Trade terms
- Supply in 20' and 40' containers, or in bulk where noted
- Every bag labelled with batch number and net weight
- Certificate of Analysis (COA) with each shipment
- Technical data sheet (TDS) and MSDS on request
- Free samples for qualification
- FOB or CFR offers, lot sizes to suit your programme
Values that set the price
- API or OCMA grade
- Yield and filtrate results
- Lot size and loading port
- Destination port for CFR offers
Ask for a price on Bentonite
Send grade, quantity, packaging and destination port. We reply with an offer and the matching data sheet.