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

Evonik Sipernat D13 Precipitated Silica

Evonik Sipernat D13 is a hydrophobic precipitated silica imported from Germany. Designed for anti-caking, defoaming and silicone rubber reinforcement, it features excellent flowability and fast dispersion, suitable for various industrial formulations.

Features Of Evonik Sipernat D13 Precipitated Silica

  1. Strong hydrophobicity – not wettable by water, ideal for moisture-sensitive powders

  2. High anti-caking effect – greatly improve flowability & storage stability

  3. Fast defoaming – high efficiency, easy to disperse

  4. Silicone rubber reinforcement – active filler for better mechanical properties

  5. Uniform particle size – smooth processing, wide compatibility

Typical Applications Of Evonik Sipernat D13 Precipitated Silica

  1. Moisture-sensitive chemical powders – anti-caking & flow improvement

  2. Defoamer formulations – industrial defoaming & fast bubble breaking

  3. Silicone rubber (HTV/RTV/LSR) – active reinforcing filler

  4. Fire extinguishing powders – anti-caking, flow aid & stable storage

  5. Foundry masking powder, CPE & plastic powder additiv

Specifications Of Evonik Sipernat D13 Precipitated Silica

Product TypeHydrophobic Precipitated Silica
AppearanceWhite powder
SiO₂ Content (dry basis)98%
Specific Surface Area (N₂)100 m²/g
Average Particle Size D5010 μm
pH Value (5% water)8
Loss on Drying4%
Loss on Ignition7%



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