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

Evonik Sipernat 325C Precipitation Silica

Sipernat 325C is an ultra-fine hydrophilic precipitated silica imported from Germany by Evonik. Specially designed for battery separator pore forming, plastic anti-blocking and catalyst carrier, it features uniform particle size and excellent dispersion to stably improve product performance and processing efficiency.


Features Of Evonik Sipernat 325C Precipitation Silica

  1. Ultra-fine uniform particle - Stable dispersion without agglomeration, suitable for high-speed film & coating

  2. Moderate surface area - Balanced adsorption & loading, excellent pore forming & anti-blocking

  3. Special for battery separator - Uniform pores, low resistance, high dimensional stability

  4. Efficient plastic anti-blocking - Good opening for polyolefin/PVC, no transparency loss

  5. High purity & inert - Ideal as catalyst binder and functional carrier

Typical Applications Of Evonik Sipernat 325C Precipitation Silica

  1. PE separators for lead-acid batteries - Pore generator & size regulator

  2. Polyolefin & PVC film - Anti-blocking agent & opening agent

  3. Heterogeneous catalyst - Binder & carrier material

  4. Special powder carrier - Liquid loading & anti-caking

  5. Adhesives & coatings - Thickening, reinforcing, rheology modification

Specifications Of Evonik Sipernat 325C Precipitation Silica

Product Model325C
BrandSipernat (Evonik Germany)
Product TypeHydrophilic precipitated silica
AppearanceWhite ultra-fine powder
BET Surface Area115–145 m²/g
DOA Absorption185–215 ml/100g
Loss on Drying≤6.0 wt%
pH Value6.0–8.0



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