CAS 1302-78-9
Bentonite Powder - Sodium Base Super Alka Hi-Bond Grade
CAS 1302-78-9Na0.33(Al,Mg)2Si4O10(OH)2·nH2OVariable (~360 to ~819 depending on hydration)
Bentonite Powder is a versatile and widely used additive in various industrial applications. This fine, off-white to light brown powder is essential in drilling mud formulations for stabilizing boreholes, controlling viscosity, and fluid loss in oil, water well, and geothermal drilling operations. Its excellent swelling and cation exchange properties make it invaluable in industries like foundry molding, agriculture for soil conditioning, and water treatment for clarification processes. Neelkanth Minerals & Traders supply this Sodium Base Super Alka Hi-Bond Grade Bentonite with a high montmorillonite content.
Main applicationDrilling mud additive — stabilizes boreholes in oil, water, and geothermal wells
Bentonite Powder plays a crucial role in the drilling and construction industries by enhancing the stability and efficiency of processes. Its strong binding and absorption properties make it a preferred choice in agriculture and water treatment operations. By improving soil structure, it boosts agricultural yields, while its ability to clarify water makes it vital for sustainable water management practices.
Also known as
- Montmorillonite
- Sodium Bentonite

Trade pricing
Quoted per enquiry
Pricing depends on volume, grade and delivery point. Our desk responds within two working hours.
Available packaging
- Available in 50 kg polypropylene or paper bags.
Documentation
Batch-specific COA issued with every consignment.
Technical specifications
- CAS number
- 1302-78-9
- Chemical formula
- Na0.33(Al,Mg)2Si4O10(OH)2·nH2O
- Molecular weight
- Variable (~360 to ~819 depending on hydration)
- Grade
- Technical grade
- Appearance
- Fine powder, off-white to light brown
- Density
- 0.65–0.85 g/cm³
- Concentration
- ≥95% purity (Neelkanth Super Alka); ≥80% montmorillonite
- Bulk Density
- 0.65-0.85 g/cm³
- Moisture Content
- ≤12%
- Swelling Index
- ≥24 ml/2 g
Bentonite Powder, characterized by its molecular formula Na0.33(Al,Mg)2Si4O10(OH)2·nH2O, is known for its superior swelling capabilities and cation exchange capacity. It possesses a typical purity of ≥95%, providing excellent binding and moisture absorption. This product is primarily sodium-based, enhancing its ability to disperse in fluids and maintain stability under various environmental conditions. Buyers typically look for a swelling index of ≥24 ml/2 g and moisture content ≤12%. The bentonite is sourced from Neelkanth Minerals & Traders and available in Super Alka Hi-Bond Grade, ideal for technical applications requiring high performance.
Delivery
Bentonite Powder - Sodium Base Super Alka Hi-Bond Grade is dispatched from our Nairobi warehouse across Kenya, and export delivery is arranged to the wider East African market. Lead time depends on quantity and grade and is confirmed with your quotation — see delivery and collection for the towns we reach and how dispatch works.
Applications & uses
- Drilling mud additive — stabilizes boreholes in oil, water, and geothermal wells
- Foundry mold binder — enhances bonding in metal casting
- Soil conditioner — improves soil structure and water retention
- Fertilizer carrier — aids in nutrient delivery
- Water treatment — assists in potable and wastewater clarification
- Construction sealing — used in ponds, slurry walls, and waterproofing
- Civil engineering — essential for underground barriers and membranes
Industries we supply this to
Why buy this from Sparks
- Enhances drilling fluid performance with controlled viscosity
- Strengthens mold structures in foundry applications
- Improves agricultural soil nutrient and moisture capacity
- Facilitates efficient water and wastewater treatment processes
- Provides reliable sealing for construction projects
- Easily dispersible for consistent application
Quality assurance
- Batches are checked against the specification values listed above before dispatch.
State what your process, auditor or customs clearance requires when you request a quotation, and it is confirmed with the quote.
Safety, handling & storage
Always consult the full Safety Data Sheet before handling. Personnel must use appropriate PPE and follow local regulations for storage, transport and disposal.
Frequently asked questions
What is the CAS number of Bentonite Powder - Sodium Base Super Alka Hi-Bond Grade?
The CAS registry number for Bentonite Powder - Sodium Base Super Alka Hi-Bond Grade is 1302-78-9. Its chemical formula is Na0.33(Al,Mg)2Si4O10(OH)2·nH2O, with a molecular weight of Variable (~360 to ~819 depending on hydration). Quote this number when requesting a quotation or checking documentation, as it identifies the substance unambiguously regardless of the trade name used.
What are the other names for Bentonite Powder - Sodium Base Super Alka Hi-Bond Grade?
Bentonite Powder - Sodium Base Super Alka Hi-Bond Grade is also referred to as Montmorillonite and Sodium Bentonite. These names describe the same substance, so a specification or enquiry written against any of them can be matched to this product.
What grade of Bentonite Powder - Sodium Base Super Alka Hi-Bond Grade is supplied?
Bentonite Powder - Sodium Base Super Alka Hi-Bond Grade is supplied as Technical grade. State the grade your process requires when requesting a quotation — where an alternative grade can be sourced, it is confirmed at quotation stage rather than assumed.
What concentration is Bentonite Powder - Sodium Base Super Alka Hi-Bond Grade supplied at?
Bentonite Powder - Sodium Base Super Alka Hi-Bond Grade is supplied at a concentration of ≥95% purity (Neelkanth Super Alka); ≥80% montmorillonite. Concentration and assay are separate figures: the concentration describes the strength of the material as supplied, and the certificate of analysis issued for your consignment carries the measured values for that batch.
What does Bentonite Powder - Sodium Base Super Alka Hi-Bond Grade look like?
Bentonite Powder - Sodium Base Super Alka Hi-Bond Grade is described as fine powder, off-white to light brown. Appearance is a useful first check on receipt of goods, though it does not replace the certificate of analysis for confirming that the material meets specification.
What is Bentonite Powder - Sodium Base Super Alka Hi-Bond Grade used for?
Common applications include drilling mud additive — stabilizes boreholes in oil, water, and geothermal wells, foundry mold binder — enhances bonding in metal casting, soil conditioner — improves soil structure and water retention, fertilizer carrier — aids in nutrient delivery, water treatment — assists in potable and wastewater clarification and construction sealing — used in ponds, slurry walls, and waterproofing. The suitability of the product for a particular process depends on the grade and specification required, which is worth confirming against your own process conditions.
Which industries use Bentonite Powder - Sodium Base Super Alka Hi-Bond Grade?
Bentonite Powder - Sodium Base Super Alka Hi-Bond Grade is supplied to the Water Treatment, Agriculture & Agrochemicals, Mining & Minerals, Construction & Admixtures and Oil, Gas & Energy sectors. These are the industries this product is listed against in our catalogue; if your application falls outside them, we can advise on suitability before you order.
What packaging is Bentonite Powder - Sodium Base Super Alka Hi-Bond Grade available in?
Available in 50 kg polypropylene or paper bags. Where a different pack size or bulk delivery is required, it is confirmed at quotation stage against availability rather than listed here as standard.
What is the HS code for Bentonite Powder - Sodium Base Super Alka Hi-Bond Grade?
Bentonite Powder - Sodium Base Super Alka Hi-Bond Grade is recorded against the EC number 215-108-5 and the HS customs code 2508.10. Quote this on customs and export paperwork; it is confirmed again on the commercial invoice for your specific consignment.
Related to Bentonite Powder - Sodium Base Super Alka Hi-Bond Grade
Where this product sits in the catalogue, and the sectors that use it.
References
Technical information on this page was compiled from the following published sources. Safety and handling data always comes from the supplier’s own safety data sheet.
- 1.Buy Bentonite Powder for Agriculture Kenya | Kivi Chemicalskivichemicals.com
- 2.Substance Information - ECHAecha.europa.eu
- 3.Directive - 2008/84 - EN - EUR-Lexeur-lex.europa.eu
- 4.Product Specificationassets.thermofisher.com
- 5.HS Code 250810 Tariff Classification and Products For Kenya | HS/HTS Code Lookuptrademo.com
- 6.Clays HS Code 2508.10 — Kenya Duty-Free (2026)hscodedb.com
- 7.Bentonite Powder Supplier in Kenya | Karivexkarivexsolutionsltd.com
- 8.BENTONITE in Kenya (Nairobi) - Finstar Industrial Chemicalsfinstarindustrialchemicals.co.ke
- 9.Bentonites in Kenya - System Star Industrial Productssystemstarindustrial.com
- 10.Buy Bentonite Powder in Kenya | Bentonite Powder Supplier | Zenco Systems Ltd - Chemical Divisionzencochemicals.com
- 11.Kenya Bentonite imports by country | 2024 | Datawits.worldbank.org
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