Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

American Colloid Company VOLCLAY 325 mesh Sodium bentonite thickener

American Colloid Company VOLCLAY® 325-mesh Sodium Bentonite is a high-purity, ultrafine clay thickener engineered for superior rheology control, suspension stability, and water absorption in drilling fluids, foundry binders, and environmental applications. Its consistent 325-mesh particle size ensures rapid hydration and exceptional gel strength with low dosage efficiency.
  • american colloid company volclay 325 mesh sodium bentonite thickener_ebd0122f
  • american colloid company volclay 325 mesh sodium bentonite thickener_ebd0122f

Features Of American Colloid Company VOLCLAY 325 mesh Sodium bentonite thickener

  1. High swelling capacity in water, delivering exceptional viscosity development and suspension stability.

  2. Premium-grade sodium bentonite with consistent 325-mesh particle size for uniform dispersion and rapid hydration.

  3. Excellent thixotropic behavior, enabling shear-thinning flow for easy processing and anti-settling performance at rest.

  4. Natural mineral origin with no synthetic polymers—ideal for environmentally sensitive or regulatory-compliant formulations.

  5. Proven compatibility with aqueous systems across diverse pH and electrolyte conditions.

Typical Applications Of American Colloid Company VOLCLAY 325 mesh Sodium bentonite thickener

  1. Water-based drilling muds for geotechnical and oil & gas exploration.

  2. Foundry mold and core binders in green sand systems.

  3. Stabilizer and suspending agent in agricultural adjuvants and pesticide concentrates.

  4. Viscosity modifier in non-aqueous and high-solids coatings and sealants.

  5. Carrier and binder in pharmaceutical tablet granulation and cosmetic pastes.

Specifications Of American Colloid Company VOLCLAY 325 mesh Sodium bentonite thickener

Chemical TypeSodium bentonite (natural smectite clay)
Product FormFine dry powder
AppearanceOff-white to light tan, free-flowing powder
Particle Size (Sieve Analysis)≥95% passes through 325 mesh (44 µm)
Moisture Content≤10.0% (as received)
Swelling Capacity (ASTM D5890)≥25 mL/g in distilled water
pH (1% slurry in water)8.0 – 9.5
Primary ApplicationsThickening, suspension, binding, sealing, and rheology control in aqueous systems


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