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

Evonik Sipernat 266 Precipitation Silica

Evonik Sipernat 266 is a hydrophilic milled precipitated silica imported from Germany. Designed for silicone rubber systems, it offers balanced particle size and absorption, efficiently reinforcing HTV/LSR/RTV‑2C, stabilizing rheology and viscosity, and serving as carrier, anti‑caking and antiblocking agent.

Features Of Evonik Sipernat 266 Precipitation Silica

  1. Balanced particle & absorption - Suitable for reinforcement and carrier applications

  2. High-efficiency silicone reinforcement - Improves tensile, tear strength and wear resistance

  3. Stable rheology & viscosity - Controls flow and extends processing window

  4. Fine grinding & easy dispersion - Uniform dispersion without agglomeration

  5. Multi-purpose versatility - Used as carrier, anti-caking, antiblocking and functional filler

Typical Applications Of Evonik Sipernat 266 Precipitation Silica

  1. HTV silicone rubber - Reinforcement & viscosity stabilization

  2. LSR silicone rubber - Enhanced mechanical properties & flow

  3. RTV‑2C silicone rubber - Higher strength & longer pot life

  4. Powder industry carrier - Liquid loading, anti-caking & flow aid

  5. Film & plastic antiblocking - Prevent blocking & improve handling

Specifications Of Evonik Sipernat 266 Precipitation Silica

Product TypeHydrophilic milled precipitated silica
AppearanceWhite powder
BET Surface Area145–175 m²/g
Median Particle Size D5010.5–14.5 μm
Oil Absorption (DOA)210–240 mL/100g
pH Value6.0–8.0
Loss on Drying≤7.0%
SiO₂ Content≥98%
CAS No.112926-00-8 / 7631-86-9



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