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

Tokuyama REOLOSIL QS-30 Precipitated Silica

Tokuyama REOLOSIL QS-30 is a hydrophilic fumed silica imported from Japan. It is designed for rheology control, reinforcement and thickening, with high purity and excellent dispersibility, suitable for coatings, adhesives, silicone rubber and other fields.

Features Of Tokuyama REOLOSIL QS-30 Precipitated Silica

  1. Strong rheology control – adjust thixotropy of liquid systems, prevent sagging and sedimentation

  2. Excellent reinforcement – improve mechanical strength of silicone rubber and polymers

  3. High purity and low impurities – purity ≥99.9%, no harmful impurities, ensure product quality

  4. Easy dispersion and processing – fluffy, non-agglomerating, suitable for various formulations

  5. Multi-functional adaptability – thickening, dust-proof, anti-caking and carrier functions

Typical Applications Of Tokuyama REOLOSIL QS-30 Precipitated Silica

  1. Coating systems – water-based, UV coatings and inks, thickening, anti-sagging, improve transparency

  2. Adhesives/sealants – thickening and reinforcement, enhance bonding strength, prevent sedimentation

  3. Silicone rubber products – reinforcement for HCR-RTV-2K silicone rubber, improve toughness

  4. Powder products – anti-caking, flow aid, improve fluidity and storage stability

  5. Cosmetics/inkjet printing paper – adjust texture, prevent bleeding, enhance ink absorption

Specifications Of Tokuyama REOLOSIL QS-30 Precipitated Silica

Product TypeHydrophilic Fumed Silica (Amorphous Silica)
AppearanceFluffy white powder
SiO₂ Content (dry basis)≥99.9%
BET Surface Area270–330 m²/g
pH Value (4% suspension)4.2
Moisture Content<2.0%
Bulk DensityApproximately 50 g/L
44μm Sieve Residue<0.01%
Chlorine (Cl) Content<50 ppm


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