Sodium Bentonite
Sodium Bentonite for Industrial Applications
CK provides sodium bentonite solutions for industrial buyers seeking suitable mineral materials for their manufacturing processes. Explore product options, discuss your technical requirements, and request specifications tailored to your application.
Application-oriented product selection
Specification and particle-size evaluation
Customized supply options based on requirements
What Is Sodium Bentonite?
Sodium bentonite is a naturally occurring clay material primarily composed of montmorillonite, a member of the smectite mineral group. Its behavior in water, including swelling, hydration, and the development of suspension properties, makes it useful in a range of industrial applications.
Depending on its mineral composition and technical characteristics, sodium bentonite can be selected for drilling fluids, foundry molding sand, civil engineering, sealing systems, and other industrial uses.
Choosing the right sodium bentonite requires more than identifying the mineral type. Particle size, moisture content, swelling behavior, rheological properties, and other application-specific requirements should also be considered.
Key Characteristics of Sodium Bentonite
Sodium bentonite is valued for its hydration behavior and its potential to provide swelling, binding, suspension, and sealing functions. The actual performance of each grade depends on its mineral composition, processing conditions, and intended application.
Sodium Bentonite Applications
Sodium bentonite serves a variety of industrial markets, but the right grade depends on the technical demands of each application. From drilling fluids and foundry molding to civil engineering and absorbent products, buyers should evaluate product specifications against their actual process requirements.

1. Drilling Fluids
Bentonite is used in selected drilling fluid systems to help develop viscosity, suspend solids, and support borehole stability. Drilling-grade material must meet the relevant technical requirements.

2. Foundry & Metal Casting
Bentonite acts as a binder in green sand molding systems. Foundry buyers typically evaluate bonding behavior and molding performance under their operating conditions.

3. Civil Engineering & Waterproofing
Selected bentonite materials are used in engineered barriers, sealing systems, and certain underground construction applications.

4. Cat Litter & Pet Absorbents
Granular sodium bentonite is used in clumping cat litter and other absorbent products. Granule size, dust level, and clumping behavior are important selection criteria.

5. Iron Ore Pelletizing
Bentonite can serve as a binder during iron ore pellet production. The appropriate grade must be assessed against pelletizing and downstream process requirements.

6. Industrial Absorbents
Selected bentonite products can be used in absorbent formulations. Particle form and absorption performance should be verified for the intended use.
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7. Ceramics & Industrial Minerals
Bentonite may be used as an additive in selected ceramic and mineral formulations where its binding or plasticity characteristics are appropriate.

8. Agricultural Formulations
Certain bentonite grades are used in fertilizer granulation and other agricultural formulations. Product suitability depends on the formulation and applicable requirements.
Sodium Bentonite Grades & Specifications
Different industrial applications require different sodium bentonite characteristics. CK can assess product requirements according to the intended application, required particle size, technical criteria, and packaging preferences.
To identify a suitable grade, buyers should specify the intended use and the parameters that matter most to their process. Available technical data can then be reviewed against the relevant requirements.
| Properties | Unit | Result |
|---|---|---|
| Aspect | Yellow to reddish brown colour | |
| Liquid Limit | ml/100 gm | 550-600 |
| Montmorillonite | ≥80% | 85 |
| Moisture Content | % by. Wt. | 12.0 Max |
| Dry Screen Analysis (residue on 75 um sieve | % by. Wt. | 25.0 max. |
| Free Swelling Volume 2gm/100ml | ml | 30 CC |
| PH Value of 5% gel | pH | 9.5- 10.0 |
| Loose Bulk Density | gm/ml | 0.85 - 1.0 |
| Gelling Time | second | 25 |
| Gelling Index | ml | 60 |
| Methylene Blue Value | mg/gm of clay | 325 - 375 |
Processing & Product Customization
Selecting the right sodium bentonite involves more than choosing a mineral type. Processing requirements, particle size, moisture control, packaging, and end-use specifications can all influence product suitability.
CK works with buyers to clarify their application requirements and identify suitable product options. Depending on the available product grade and processing capabilities, specifications and packaging can be discussed before an order is confirmed.
Customization Options
Particle Size: Discuss the required powder fineness or granular size.
Technical Specifications: Review the parameters relevant to your intended application.
Packaging: Discuss suitable packaging formats for handling, storage, and transportation.
Application Requirements: Identify the key performance criteria for your manufacturing process.
Technical Documentation: Request available product specifications and inspection data for evaluation.
Packaging & Supply Options
Suitable packaging helps protect sodium bentonite during storage, handling, and transportation. Packaging selection should take into account the product form, moisture sensitivity, order quantity, and destination requirements.
CK can discuss appropriate packaging options according to the confirmed product grade and actual supply capabilities.
For an accurate quotation, please provide your required product form, packaging preference, order quantity, destination, and any applicable technical specifications.

Custom jumbo bag
Custom jumbo bag for sodium bentonite

25kg/bag
25kg/bag for sodium bentonite

50kg/bag
50kg/bag for sodium bentonite
Why Choose CK?
Choosing an industrial mineral supplier requires more than comparing prices. Buyers need clear specifications, suitable product options, reliable communication, and a practical understanding of their application requirements.
CK focuses on industrial mineral products and works with customers to clarify technical needs, evaluate suitable specifications, and coordinate product supply.
Application-Oriented Communication
We focus on understanding your intended application and the technical criteria that matter to your production process.
Flexible Specification Discussions
Product specifications and packaging requirements can be reviewed according to the actual capabilities and available grades.
Technical Data Support
Available technical data and inspection documents can help buyers evaluate product suitability before placing an order.
Responsive Inquiry Handling
Share your product requirements, expected quantity, and destination so that the next steps can be discussed clearly.
Sodium Bentonite: Frequently Asked Questions
Choosing the right sodium bentonite can depend on your application, technical requirements, and preferred product form. The following answers address common questions from industrial buyers.
Sodium bentonite is used in selected drilling fluids, foundry molding sands, civil engineering systems, sealing applications, cat litter, and other industrial formulations. The appropriate grade depends on the intended use.
The main distinction relates to their exchangeable cations and resulting hydration and swelling behavior. Sodium bentonite generally exhibits stronger swelling than typical calcium bentonite, although actual performance varies with mineral composition and processing.
Common evaluation criteria include montmorillonite content, moisture, swelling index, viscosity, particle size, and pH. Not every parameter is equally important for every application.
Particle-size requirements depend on the application and the supplier’s available grades and processing capabilities. Specify whether you need powder or granules and provide your target size range.
You can contact CK to request available technical specifications and inspection documents for the product under consideration.
Start with your end use, required performance, applicable industry standard, and processing conditions. These details help determine which product specifications need to be evaluated.
Packaging depends on the product form, order quantity, destination, and available supply options. Share your requirements with CK to confirm the suitable format.
Send CK your intended application, required specifications, quantity, preferred packaging, and destination. These details help establish the basis for a more accurate quotation.
Looking for the Right Sodium Bentonite?
Finding the right grade starts with understanding your application and technical requirements. Contact CK to discuss your specifications, packaging preferences, and available product options.