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

OCI KONASIL K-300 Hydrophilic Fumed Silica

OCI KONASIL K-300 is an imported hydrophilic fumed silica from South Korea, belonging to KONASIL series. Refined by high-temperature flame hydrolysis, it is a high-purity amorphous white fluffy powder with high specific surface area, strong reinforcement, excellent thixotropy and efficient anti-settling, designed for medium and high-end silicone rubber, coatings and adhesives.

Features Of OCI KONASIL K-300 Hydrophilic Fumed Silica

  1. High specific surface area & strong reinforcement - Suitable for high-end needs, significantly improve tensile strength, tear strength and wear resistance of elastomers

  2. Strong thixotropy & anti-settling - Precisely control system rheology, effectively prevent sagging and settling, enhance construction stability

  3. High purity & low impurity - SiO₂ content ≥99.8%, extremely low impurities, ensure product thermal and electrical insulation and batch stability

  4. Wide system compatibility - Good compatibility with silicone rubber, acrylic, PU, PVC plastisol and other resins and coating systems

  5. Easy powder processing - Fluffy and easy to disperse, no coarse particles, improve powder fluidity, anti-caking, easy feeding and storage

Typical Applications Of OCI KONASIL K-300 Hydrophilic Fumed Silica

  1. HTV/RTV silicone rubber - High-end reinforcing filler, improve product mechanical properties and durability, suitable for sealing and shock absorption products

  2. Sealants & high-end adhesives - Thixotropic thickening and anti-settling, enhance bonding strength and workability, suitable for precision sealing scenarios

  3. Industrial coatings & printing inks - Anti-sagging, system stabilization, improve film fineness and printing uniformity

  4. Acrylic/PU/PVC plastisol - Rheology control, improve processing and molding performance, enhance product surface texture

  5. Resin gel coats & rubber products - Enhance mechanical properties, while improving product thermal and electrical insulation, suitable for special scenarios

Specifications Of OCI KONASIL K-300 Hydrophilic Fumed Silica

BrandOCI Korea
Product SeriesKONASIL Hydrophilic Fumed Silica
Product TypeFumed Silica
AppearanceWhite fluffy amorphous powder
BET Surface Area300±30 m²/g
pH Value (4% Dispersion)4.2
Loss on Drying≤1.5 wt%
Loss on Ignition≤1.5 wt%
Bulk Density50 g/L



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