Sodium Bentonite Powder – Industrial Clay for Sealing & Drilling

Sodium bentonite powder is a naturally occurring clay composed primarily of the mineral montmorillonite. It is widely used in industrial applications due to its ability to absorb water, swell significantly, and form impermeable barriers.
These properties make sodium bentonite valuable in industries such as drilling, construction, environmental protection, and manufacturing.
BOXx Chemical Distributor supplies sodium bentonite powder in bulk quantities for industrial buyers across South Africa, Southern Africa, and export markets.

Key Properties of Sodium Bentonite

Sodium bentonite powder offers several performance advantages:
  • High swelling capacity when mixed with water
  • Strong absorption and moisture retention
  • Excellent sealing and barrier formation
  • High cation exchange capacity for adsorption processes
  • Stable performance across industrial applications
When hydrated, bentonite can expand several times its dry volume, creating durable seals and viscous slurries used in drilling and engineering projects.
sodium bentonite powder for drilling and construction

Bentonite is a naturally occurring clay that is composed primarily of montmorillonite, a type of clay mineral. It is known for its absorbent and swelling properties, which make it useful in a variety of industrial and environmental applications.

One of the most common uses of bentonite is as a drilling mud. When added to water, bentonite swells and forms a gel-like substance that helps to lubricate the drill bit and prevent cuttings from entering the wellbore. This makes it an essential component of drilling fluids in the oil and gas industry.

In addition to its use as a drilling mud, bentonite is also used in wastewater treatment. Its absorbent properties make it effective at removing impurities from water, and it is commonly used in treatment systems to remove heavy metals, oils, and other contaminants.

Bentonite is also used as a binder in the production of iron ore pellets. When added to the iron ore concentrate, bentonite binds the particles together, forming a pellet that can be easily transported and processed in a blast furnace.

When it comes to packaging, bentonite is available in a variety of options to meet specific needs. For industrial applications, bulk bags and super sacks are available for large-scale operations. For smaller operations or retail sale, smaller bags can be purchased.

Technical Data

PropertyValue
CAS Number1302-78-9
Chemical FormulaAl2H2O12Si4
Molar Mass360.31 g/mol
AppearanceGrey or brown, fine powder
Density2.3-2.6 g/cm³
Particle Size95% <75 microns
pH8.5-10.5 (2% suspension at 25°C)
Swelling Capacity20-25 mL/2g
Cation Exchange85-110 meq/100g
Montmorillonite85% minimum

 

Specification

  • Purity: 90% minimum (natural sodium bentonite)
  • Moisture content: 12% maximum
  • Sand content: 3% maximum
  • Free from harmful impurities and contaminants

Packaging

BOXx Chemical Distributor supplies sodium bentonite powder in packaging suitable for industrial buyers:
  • 25 kg bags
  • 50 kg sacks
  • Jumbo bulk bags
  • Export container quantities
Supply is available across South Africa, Southern Africa, and international export markets.

Choose our premium bentonite clay for all your commercial and industrial needs. Don’t miss out on our unbeatable prices, bulk discounts, and fast shipping – order today and experience the difference in quality and service!

Industrial drilling operations often use sodium bentonite powder, along with weighting minerals such as Barite, in drilling fluids.