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

Evonik Sipernat 236 Precipitation Silica

Sipernat 236 is a finely ground synthetic precipitated silica imported from Germany, with medium particle size, medium absorption and high purity. It reinforces HTV, LSR, RTV-2C silicone rubber, stabilizes viscosity, and achieves translucent products with low yellowing.

Features Of Evonik Sipernat 236 Precipitation Silica

  1. Balanced medium particle size and absorption - Suitable for both reinforcement and carrier needs

  2. Efficient silicone rubber reinforcement - Greatly improves tensile, tear strength and wear resistance

  3. Controllable viscosity stability - Stabilizes rubber viscosity and extends processing window

  4. High purity and low yellowing - Neutral pH, high purity, achieving translucent and low-yellowing silicone

  5. Finely ground and easy to disperse - Good dispersibility, easy mixing without agglomeration

Typical Applications Of Evonik Sipernat 236 Precipitation Silica

  1. HTV silicone rubber: Reinforcement, viscosity stabilization for seals and rubber rollers

  2. LSR silicone rubber: Improved mechanical properties and fluidity for precision silicone products

  3. RTV-2C silicone rubber: Strength enhancement and longer pot life for potting and sealing

  4. Special carrier systems: Stable loading for active ingredients in chemical and pharmaceutical fields

  5. Translucent silicone products: Achieve translucent and low-yellowing appearance

Specifications Of Evonik Sipernat 236 Precipitation Silica

Product TypeFinely ground synthetic precipitated silica
AppearanceWhite powder
BET Surface Area180–220 m²/g
Median Particle Size D509–13 μm
Oil Absorption190–230 mL/100g
pH Value6.0–8.0 (Neutral)
Loss on Drying≤7.0%
SiO₂ Content≥98%
CAS No.112926-00-8


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