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

Tokuyama REOLOSIL DM-10C Hydrophobic Fumed Silica

Tokuyama REOLOSIL DM-10C is a hydrophobic fumed silica imported from Japan, surface-modified with dimethyldichlorosilane. It features excellent thixotropy, anti-sedimentation, reinforcement and flow aid, with good dispersibility and compatibility, widely used in coatings, inks, adhesives, silicone rubber and LED materials.

Features Of Tokuyama REOLOSIL DM-10C Hydrophobic Fumed Silica

  1. Strong hydrophobicity & moisture-proof – uniformly surface-modified, reduce moisture absorption, improve storage stability

  2. Efficient thixotropy & anti-sedimentation – quickly form 3D structure, prevent sagging and pigment settling

  3. Good reinforcement & toughening – enhance mechanical strength and aging resistance of silicone rubber

  4. Powder flow aid & anti-caking – improve powder fluidity and prevent caking

  5. High purity & low impurity – low metal ion content, suitable for LED and electronic encapsulation

Typical Applications Of Tokuyama REOLOSIL DM-10C Hydrophobic Fumed Silica

  1. Paints & coatings – thicken and thixotropic, anti-sedimentation, improve film uniformity

  2. Printing inks – stabilize rheology, improve printing clarity and color reproducibility

  3. Sealants & adhesives – enhance bonding strength, waterproof and long-term reliability

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

  5. Powder materials – flow aid and anti-caking, optimize processing and packaging

Specifications Of Tokuyama REOLOSIL DM-10C Hydrophobic Fumed Silica

Product TypeHydrophobic Fumed Silica
AppearanceFluffy white powder
SiO₂ Content≥99.8%
BET Surface Area230±20 m²/g
Average Primary Particle Size7 nm
Carbon Content1.0–2.0%
pH Value (4% suspension)4.5–6.5
Moisture Content<0.5%
Bulk DensityApprox. 50 g/L


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