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

Tokuyama REOLOSIL QS-20LS Hydrophilic Fumed Silica

Tokuyama REOLOSIL QS-20LS is a hydrophilic fumed silica imported from Japan. It focuses on low-viscosity rheology control, with excellent reinforcement and dispersibility, suitable for coatings, silicone rubber, adhesives and other fields.


Features Of Tokuyama REOLOSIL QS-20LS Hydrophilic Fumed Silica

  1. Low viscosity control – adjust liquid thixotropy without excessive thickening, improve construction fluency

  2. High-efficiency reinforcement – enhance mechanical properties of HCR-RTV-2K silicone rubber

  3. Easy dispersion – fluffy powder, convenient to add, reduce processing energy consumption

  4. High purity and low impurities – SiO₂>99.9%, no harmful impurities, ensure product quality

  5. Multi-functional adaptation – anti-sagging, anti-settling, anti-caking and carrier functions

Typical Applications Of Tokuyama REOLOSIL QS-20LS Hydrophilic Fumed Silica

  1. Coating systems – water-based/UV coatings, leather finishing, anti-sagging and anti-settling

  2. Silicone rubber products – reinforcement for HCR and RTV-2K silicone rubber

  3. Adhesives/sealants – thickening and thixotropy, prevent filler sedimentation

  4. Powder products – anti-caking and flow aid, improve storage and processing performance

  5. Cosmetics/electronics – texture adjustment and dielectric property improvemen

Specifications Of Tokuyama REOLOSIL QS-20LS Hydrophilic Fumed Silica

Product TypeHydrophilic Fumed Silica
AppearanceFluffy white powder
SiO₂ Content (dry basis)>99.9%
BET Surface Area200–240 m²/g
pH Value (4% suspension)4.2
Moisture Content<1.5%
Bulk DensityApprox. 50 g/L
44μm Sieve Residue<0.01%
Chlorine Content<50 ppm


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