AEROSIL® fumed silica for defoamers

AEROSIL® fumed silica are used in defoamer, foam inhibitors, foam regulators and/or deaerator formulations based on various hydrophobic liquids such as mineral oil, silicone oil and/or vegetable oil.

Defoamer AEROSIL

Properly dispersed in oil, AEROSIL® effectively disrupt the formation of bubbles in most kinds of foams by impairing bubble stability and causing bubbles to burst as they begin to form.

  • AEROSIL® hydrophobic fumed silica is an effective defoamer booster.

  • AEROSIL® fumed silica is often used as a rheology modifier and antisettling agent in oil and emulsion formulations.

For more detailed product and application information, please download the brochure: TI 1313 – “SIPERNAT® and AEROSIL® for Defoamer”.

AEROSIL® for Defoamers



Technical Information 1313: SIPERNAT® and AEROSIL® for Defoamer  (pdf, 742 KB)

Foam is detrimental to most poduction processes. The use of foam control agents containing Evonik SIPERNAT® and AEROSIL® grades is a cost-effective method preventing for foam problems.


Technical Information 1360: SIPERNAT® and AEROSIL® - an Essential in Industrial Powder Technology  (pdf, 245 KB)

Performance Silica have found their way with numerous applications into many branches of industry. This also applies to their use as carrier for liquid or pasty substances as well as the application as flow aid for powdered or granular products. With numerous hydrophilic and hydrophobic AEROSIL® Fumed Silica as well as Sipernat® Precipitated Silica, Evonik offers the best choice of problem solvers worldwide.


Technical Information 1381: AEROSIL® and SIPERNAT® - Efficient booster for defoamer in paints and coatings  (pdf, 448 KB)

Hydrophobic silica products are well known as efficient booster for defoamer formulations which are used in a variety of industries and applications. This Technical Brochure describes how AEROSIL® fumed silica and SIPERNAT® specialty silica products from Evonik effectively enhance the performance of polyether-siloxane based defoamer formulations in three different latex binder systems commonly used in waterborne paints and coatings.


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