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

Tokuyama REOLOSIL DM-10 Hydrophobic Fumed Silica

Tokuyama REOLOSIL DM-10 is a hydrophobic fumed silica imported from Japan, made by high-temperature hydrolysis of high-purity silicon tetrachloride and modified with dimethyldichlorosilane, designed for polar liquid systems with thixotropy, flow aid and reinforcement functions.


Features Of Tokuyama REOLOSIL DM-10 Hydrophobic Fumed Silica

  1. Strong hydrophobicity & hydrolysis resistance – modified with dimethyldichlorosilane, moisture-proof and hydrolysis-resistant, improve long-term storage stability

  2. Efficient thixotropic thickening – rely on nano-level agglomeration structure to thicken quickly and endow thixotropy, prevent sagging and sedimentation

  3. Excellent reinforcement – as a reinforcing filler for rubber and elastomers, significantly enhance mechanical strength and durability

  4. Powder flow aid & anti-caking – improve powder fluidity, prevent caking, suitable for various powder processing scenarios

  5. High purity & easy processing – ultra-fine particle structure, fluffy without agglomeration, easy to add and compatible with multiple processes

Typical Applications Of Tokuyama REOLOSIL DM-10 Hydrophobic Fumed Silica

  1. Silicone rubber/elastomers – efficient reinforcement, improve toughness, tear resistance and aging resistance

  2. Paints & coatings – thickening and thixotropy, prevent pigment sedimentation, improve film flatness

  3. Sealants & adhesives – thickening and reinforcement, improve bonding strength, waterproof performance and long-term stability

  4. LED & electronic materials – high purity for encapsulation, ensure insulation and long-term stability of electronic devices

  5. Powder materials – flow aid and anti-caking, adjust charging performance, improve processing and storage convenience

Specifications Of Tokuyama REOLOSIL DM-10 Hydrophobic Fumed Silica

Product TypeHydrophobic Fumed Silica
AppearanceFluffy white powder
SiO₂ Content≥99.8%
BET Surface Area80–120 m²/g
Carbon Content3.2%
pH Value (4% suspension)5.5–7.5
Moisture Content<0.5%
Bulk DensityApprox. 50 g/L
Primary Particle SizeApproximately 20 nm
Aluminum Content<20 ppm


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