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

Evonik Sipernat D10 Hydrophobic Fumed Silica

Evonik Sipernat D10 is a German imported hydrophobic precipitated silica specially developed for high-efficiency defoamers. It features excellent hydrophobicity, fast dispersion, strong defoaming and antifoaming performance, suitable for mineral oil, silicone oil and harsh acid-base systems, also used as powder flow aid and anti-caking agent.

Features Of Evonik Sipernat D10 Hydrophobic Fumed Silica

  1. Ultra-high defoaming efficiency - 5–10 times in mineral oil systems and nearly 2 times in silicone oil systems than ordinary fumed silica

  2. Strong acid & alkali resistance - Stable defoaming performance in harsh acid and alkali environments

  3. Fast dispersion at low temperature - Easily dispersed at room or 60–80℃ without high-temperature hydrophobic modification

  4. Cost-effective formulation - Reduce dosage by 20–40%, fast defoaming & long antifoaming, lower total cost

  5. Dual-function application - Combine defoaming activity with powder flow & anti-caking, multi-purpose

Typical Applications Of Evonik Sipernat D10 Hydrophobic Fumed Silica

  1. Mineral oil defoamers - Efficient defoaming for wastewater treatment, industrial cleaning, paper & coatings

  2. Silicone defoamers - Enhanced efficiency for textile, fermentation, coatings and daily chemicals

  3. Strong acid & alkali systems - Suitable for electroplating, chemical synthesis, metal processing

  4. Moisture-sensitive powders - Used as flow aid and anti-caking agent for better processing & storage

  5. Industrial cleaning formulations - Fast defoaming for various cleaners and surface treatment fluids

Specifications Of Evonik Sipernat D10 Hydrophobic Fumed Silica

Product TypePrecipitated Silica
AppearanceWhite Powder
SiO₂ Content>97 wt%
pH Value (5% Water Solution)6.5
Particle Size D50115 μm
Specific Surface Area (N₂)180 m²/g
Oil Absorption210–240 ml/100g
Loss on Drying≤6.0 wt%
CAS No.7631-86-9, 112926-00-8
Packing15 kg/bag


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