CAS: 65997-17-3

Extremaspheres™ are lightweight expanded foam-glass spheres produced from recycled glass. Their porous structure combines low weight with pressure resistance, thermal insulation, moisture resistance, and dimensional stability.

These properties make Extremaspheres suitable for reducing the density of cementitious materials, composites, coatings, and other industrial products. They can also help improve thermal performance and reduce the amount of heavier raw materials required in the finished product.

Chemical Properties of Extremaspheres

  • Material Type: Expanded foam-glass spheres

  • Chemical Composition: Amorphous, inorganic glass derived from recycled glass

  • CAS Number: Refer to the Safety Data Sheet for the specific product grade

  • Molecular Formula: Not applicable; Extremaspheres are a glass-based material rather than a single chemical compound

  • Appearance: White, porous spherical granules

  • Particle Size: Varies according to product grade

  • Bulk Density: Varies according to product grade

  • Thermal Conductivity: Low

  • Fire Behavior: Non-combustible

  • Chemical Stability: Chemically and biologically stable under recommended storage and use conditions

Physical Characteristics

  • Color: White

  • Shape: Spherical or near-spherical granules

  • Structure: Lightweight and porous

  • Texture: Dry, free-flowing granular material

  • Moisture Resistance: Resistant to moisture

  • Pressure Resistance: Suitable for applications exposed to compressive forces

  • Thermal Performance: Provides thermal-insulation properties

  • Compatibility: Can be incorporated into cementitious, polymer-based, and liquid-applied systems, subject to compatibility testing

  • Particle Size and Density: Available in different grades; consult the corresponding Technical Data Sheet

Application in Oil & Gas

Extremaspheres are used as lightweight extenders in oil and gas well-cementing systems. Their low density helps reduce the overall density of cement slurries, while their pressure resistance supports performance under demanding well conditions.

Their insulating characteristics can also help control heat transfer within cementing systems. The appropriate grade and addition rate should be selected according to the required slurry density, pressure conditions, and technical specifications of the application.

Other Industries and Applications

Extremaspheres can also be used in several other sectors, including:

Construction: Used in lightweight concrete, mortars, renders, plasters, tile adhesives, and dry-mix products to reduce weight and improve thermal insulation.

Insulation: Incorporated into wall, floor, and roofing systems that require lightweight thermal or acoustic insulation.

Panels and Precast Materials: Used in lightweight panels, precast components, and polymer concrete.

Coatings: Added to coatings and liquid-applied materials to reduce density and support thicker film builds.

Composite Materials: Used as a lightweight filler in compatible polymer and mineral-based composite systems.

Additive Manufacturing: Incorporated into selected cementitious and construction materials intended for 3D-printing processes.

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