Technical datasheet

AEROSIL® RX 300

Supplied byEvonik- Last Updated on Oct 30, 2025

AEROSIL® RX 300 by Evonik acts as a rheology controlling agent in complex liquid system. It is a hydrophobic fumed silica treated with organosilane (HMDS). It has negative electrostatic charge and provides efficient free flow aid.
  • It is applied to reduced moisture pick up behavior for dry powder.
  • It is recommended for adhesive and sealant applications.
  • It is EINECS, TSCA, DSL, PICCS, AICS, ENCS, KECI and IECSC registered.
  • AEROSIL® RX 300 has a shelf life of 2 years after production.
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For which system

Adhesives|
Sealants

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AEROSIL® RX 300 properties

Other properties

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