Description

Aerosil R 972 is a hydrophobic fumed silica, a high-purity synthetic amorphous silicon dioxide. This specialty additive is engineered to provide exceptional rheological control and reinforcement in non-aqueous systems, making it a critical component for enhancing product performance and stability. It is essential for formulators and manufacturers in the coatings, adhesives, sealants, plastics, and pharmaceutical industries seeking to improve viscosity, prevent settling, and impart thixotropic properties.

Application

• Coatings & Inks: Acts as a rheology modifier and anti-settling agent to prevent sagging and pigment sedimentation.
• Adhesives & Sealants: Provides thixotropy for non-slump performance and reinforces the polymer matrix.
• Plastics & Composites: Used as a reinforcing filler and processing aid to improve mechanical properties and flow characteristics.
• Pharmaceuticals: Serves as a glidant and anti-caking agent in powder formulations and tablet manufacturing.
• Silicone Rubber: Functions as a reinforcing filler to enhance tensile strength and tear resistance.
• Cosmetics & Personal Care: Utilized to control viscosity and provide a silky texture in creams, lotions, and sunscreens.
• Food & Feed: Employed as an anti-caking agent for powdered foodstuffs and nutritional supplements.
• Electronics: Used in potting compounds and encapsulants for its dielectric properties and reinforcement.

Basic Information

Product Name	Aerosil R 972
CAS No.	60842-32-2
Molecular Formula	SiO₂
Molecular Weight	60.08 g/mol
Synonyms	Hydrophobic Fumed Silica; Fumed Silica, Hydrophobic; Silica, Amorphous, Fumed, Hydrophobic; Silicon Dioxide, Fumed, Hydrophobic; Colloidal Silicon Dioxide, Hydrophobic; R 972; Aerosil® R972; HDK H20
EINECS	Contact for details

Quality Control

Our Aerosil R 972 is manufactured under strict quality management systems. Each batch undergoes rigorous testing to ensure consistent performance, including analysis of key parameters like specific surface area (BET), hydrophobicity, and tamped density. Certificates of Analysis (COA) are provided with every shipment to guarantee compliance with agreed specifications and support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure containers are sealed immediately after use to prevent moisture absorption, which can affect performance.

Specification

Item	Specification
Appearance	White, fluffy powder
Specific Surface Area (BET)	110 ± 20 m²/g
Carbon Content	0.9 - 1.3 %
pH (in 4% dispersion)	3.6 - 4.3
Tamped Density	Approx. 50 g/l
Loss on Drying (2h at 105°C)	≤ 0.5 %
Ignition Loss (2h at 1000°C)	≤ 2.0 %
Sieve Residue (Mocker, 45 µm)	≤ 0.05 %

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.