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

Tokuyama REOLOSIL QS-20 Hydrophilic Fumed Silica

Tokuyama REOLOSIL QS-20 is imported hydrophilic fumed silica from Japan with high purity and easy dispersion. It excels in rheology control, reinforcement, thickening and anti-settling, widely used in coatings, adhesives, silicone rubber and powder additives.

Features Of Tokuyama REOLOSIL QS-20 Hydrophilic Fumed Silica

  1. Precise thixotropic control – stabilizes liquid rheology, prevents sagging and settling

  2. High-efficiency reinforcement – greatly improves strength, tensile and wear resistance

  3. Ultra-high purity – SiO₂>99.9%, low impurities ensure stable product quality

  4. Fast dispersion – fluffy powder, easy to add and process without agglomeration

  5. Multi-functional – integrates thickening, anti-caking, carrier and flow aid

Typical Applications Of Tokuyama REOLOSIL QS-20 Hydrophilic Fumed Silica

  1. Coatings & inks – water-based/UV coatings, leather finishing, thickening & anti-sagging

  2. Adhesives & sealants – thickening, reinforcement, anti-settling

  3. Silicone rubber – reinforcement for HCR/RTV-2K silicone

  4. Powder systems – anti-caking, flow improvement

  5. Cosmetics & plastics – texture adjustment & suspension stability

Specifications Of Tokuyama REOLOSIL QS-20 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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