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AEROSIL® 200 HV

1 of 33 products in this brand
AEROSIL® 200 HV is a hydrophilic fumed silica with a specific surface area of 200 m²/g.

Chemical Name: Silica gel, pptd., cryst.-free

Functions: Rheology Modifier

CAS Number: 112926-00-8

Chemical Family: Silica

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Victor Lifton

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The Silica Specialists At Evonik North America

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Identification & Functionality

Chemical Family
Fluids & Lubricants Functions
CAS No.
112926-00-8
EC No.
601-214-2

Features & Benefits

Product Features
  • Optimum adjustment of rheology during processing
  • Reinforcement of silicone elastomers
  • Thickening of non-polar liquids
  • Free-flow of industrial powders
  • High chemical purity
  • Excellent insulation properties, even at high and low temperatures

Applications & Uses

Fluids & Lubricants Type
Fluids & Lubricants End Use
AEROSIL® Fumed Silica in Lubricating Greases

AEROSIL® fumed silica helps to build a stable matrix to increase viscosity and suppress oil separation in lubricating greases. It can be used in the following systems:

  • In non-soap greases, used in high-temperature applications up to 230° C as well as for extreme-pressure and multipurpose greases.
  • In soap greases, thickened by fatty acid soaps of lithium, calcium, sodium or aluminum, AEROSIL® fumed silica can be used to further improve the performance of the lubricating grease.
  • Hydrophilic fumed silica provides optimized thickening effects in non-polar oils.
  • Hydrophobic fumed silica provides viscosity control and increased water repellency in semi-polar to polar oils.
  • The surface area of the silica and the volume fraction of the silica in the fi nal mass play a role in the long term storage and heat stability.
Cable Gel Applications

Use of AEROSIL® fumed silica for cable gels gives excellent performance when it comes to shear-thinning, providing quick recovery and the gel does not require heat to be applied. AEROSIL® fumed silica improves properties of oil-based filling compounds for wire and cables to protect fibers (e. g. optical fibers) as it:

  • Supports to isolate sensitive optical fi bers from external forces
  • Protects the fi bers from moisture
  • Provides thickening to help the gel to stay where it is placed
  • Helps to form a seal to keep out contaminants like dust, dirt and water
  • Is non-conductive / does not negatively infl uence di-electrical properties
Lubricating Grease Applications

The use of AEROSIL® fumed silica is recommended for lubricating greases used in industrial applications, automotive, electrical as well as food grade.

Electrical

  • High thixotropic effect
  • High temperature stability
  • Dielectric properties

Industrial

  • High thixotropic effect
  • High temperature stability
  • Wear resistance
  • Extreme pressure resistance

Automotive

  • High thixotropic effect
  • High temperature stability
  • Wear resistance
  • Reduced friction

Food - Hydrophilic AEROSIL® are generally recognized as safe (GRAS; direct food contact)

  • High thixotropic effect
  • High temperature stability
  • Wear resistance

Properties

Physico-Chemical Properties
ValueUnitsTest Method / Conditions
Tamped Density*approx. 50g/l-
Specific Surface Area (BET)175 - 225m²/g-
SiO₂ Content (based on ignited material)min. 99.8%-
pH Value (in 4% dispersion)3.7 - 4.5--
Loss on Drying* (at 105 °C, 2 hours)max. 1.5%-

Regulatory & Compliance

Packaging & Availability

Country Availability
Packaging Type
Regional Availability
  • North America
Packaging Information

AEROSIL® 200 HV is supplied in multiple layer 10 kg bags.

Storage & Handling

Shelf Life
2 years
Storage Conditions

Recommend to store the product in closed containers under dry conditions and to protect the material from volatile substances. AEROSIL® 200 HV should be used within 2 years after production.