Aerosil 200 (Fumed Silica) – Rheology Control Additive | Evonik

Aerosil 200 hydrophilic fumed silica powder for coatings
Product Overview

Aerosil 200 is a hydrophilic fumed silica with a specific surface area of approximately 200 m²/g. It is widely used as a silica-based rheology control additive in coating formulations and related systems. The product is composed primarily of silicon dioxide (SiO₂) with high purity and controlled particle characteristics.

Due to its high surface area and fine particle structure, Aerosil 200 is incorporated into formulations to assist in viscosity adjustment and structural control. It is suitable for waterborne and solventborne systems, radiation-curing coatings, and both 1-pack and 2-pack coating systems.

The material is supplied as a light, fluffy powder and can be added directly to formulations or introduced as a pre-dilution depending on processing requirements.

Common Names
  • Fumed Silica
  • Silicon Dioxide (SiO₂)
  • Hydrophilic Silica
Technical Specifications
Parameter Specification
Appearance White, fine powder
Chemical Type Hydrophilic Fumed Silica
CAS No. 112945-52-5
SiO₂ Content > 99.8 %
Specific Surface Area (BET) 175 – 225 m²/g
pH (4% dispersion) 3.7 – 4.5
Loss on Drying < 1.5 %
Tamped Density Approx. 50 g/L

The above specifications are provided for reference purposes only. For precise and up-to-date technical details, please contact our marketing team.

Key Benefits
  • Supports rheology control in liquid systems
  • Assists in anti-settling and anti-sagging behavior
  • Compatible with multiple coating technologies
  • Can be added as supplied or via pre-dilution
  • Universally applicable across various coating systems
Applications
  • General industrial coatings
  • Wood coatings
  • Powder coatings
  • Plastic coatings
  • Waterborne and solventborne coating systems
  • Rubber Industry
  • Radiation-curing coatings (1-pack and 2-pack systems)
Recommended Dosage

As supplied, calculated on total formulation: 1.0 – 2.0 %

Recommended dosage may vary based on formulation and processing conditions. Users should verify dosage before commercial use.

Available Pack Sizes
  • Standard Pack: 10 kg
  • Repacked: 1 kg (Specially for trial and R&D)

We deliver pan-India and have tie-ups with all major couriers & transporters to ensure timely dispatch and safe handling.

Storage Conditions

Store in original, unopened packaging under dry conditions. Keep containers tightly closed and protect the material from moisture and volatile substances. Avoid dust formation during handling. Use appropriate personal protective equipment as per SDS guidelines. Shelf life is up to 24 months when stored as recommended.

Related Products and Citations

Compiled from:

  • Evonik – Official Technical Datasheet for Aerosil 200 (Silica-based rheology control additive).

We are independent dealers and are not associated with the manufacturer. The information provided is compiled from official manufacturer datasheets and independent research. Users must evaluate product suitability and applicability before use.

Summary

Lab Line Enterprises is an ISO 9001:2015 certified supplier of industrial chemicals serving rubber, polymer, and coating manufacturers across India. We supply Aerosil 200 (Fumed Silica) in standard 10 kg packs as well as small pack sizes (1 kg / 5 kg) for trials and R&D purposes. The product is commonly used by manufacturers in cities such as Mumbai, Delhi, Ahmedabad, Chennai, Hyderabad, Pune, and Kolkata for coating and formulation applications. Official TDS and SDS are available on request. Dispatch is arranged pan-India through established courier and transporter networks.

Tell us your requirements

Looking for the right chemical solution? We’re here to help. Whether it’s specialty polymers, rubber additives, or custom formulations, share your specific needs and our experts will tailor the perfect solution for you.

Call us at +91-7738642178 or fill out our online form to get started.

Download Datasheet

By downloading the datasheet, you consent to share your company name, email address, and mobile number with Lab Line Enterprises. This information may be used for internal marketing and sales communication.