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

Tokuyama REOLOSIL DM-30S Hydrophobic Fumed Silica

Tokuyama REOLOSIL DM-30S is a hydrophobic fumed silica imported from Japan, surface-modified with dimethyldichlorosilane. It has high specific surface area, strong thixotropy and excellent reinforcement, designed for polar liquid systems, suitable for paints, inks, silicone rubber and other fields.

Features Of Tokuyama REOLOSIL DM-30S Hydrophobic Fumed Silica

  1. Strong hydrophobicity & moisture resistance – organically modified surface, hydrolysis-resistant, prolong formula storage stability

  2. High specific surface area reinforcement – ultra-fine particle structure, greatly enhance mechanical strength of silicone rubber

  3. Strong thixotropic thickening – quickly form 3D network, prevent sagging and sedimentation, improve construction fluency

  4. Ultra-high purity – extremely low metal ions, suitable for high-cleanliness scenarios like LED and toner

  5. Multi-scenario adaptability – flow aid and anti-caking functions, suitable for powder and liquid system

Typical Applications Of Tokuyama REOLOSIL DM-30S Hydrophobic Fumed Silica

  1. Paints & coatings – thickening and anti-settling for polar systems, improve film flatness and weatherability

  2. Printing inks – enhance thixotropy and pigment dispersion, improve printing clarity and color stability

  3. Sealants & adhesives – thickening and reinforcement, improve bonding strength and waterproof performance

  4. LED & electronic materials – high purity for encapsulation, ensure insulation and electronic stability

  5. Toner & powder materials – flow aid and anti-caking, adjust charging performance, improve processing effect

Specifications Of Tokuyama REOLOSIL DM-30S Hydrophobic Fumed Silica

BrandTokuyama (REOLOSIL Series)
Product TypeHydrophobic Fumed Silica
AppearanceFluffy white powder
SiO₂ Content≥99.8%
BET Surface Area210–250 m²/g
Carbon Content2.2%
pH Value (4% suspension)4.8
Moisture Content<0.5%


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