Aerosil R 972

Aerosil R 972 (CAS 60842-32-2) is a hydrophobic fumed silica produced by surface-treating pyrogenic silica with dimethyldichlorosilane. It controls rheology, reduces moisture uptake, and improves flow in liquid and powder systems across demanding industrial applications.

In solvent-borne and solvent-free coatings, it prevents sagging and settling while maintaining low viscosity at high shear. This is critical for spray and roller applications where precision and consistency are required for the final finish.

Adhesive and sealant formulators use it to build thixotropy in polyurethane, epoxy, and silicone systems without compromising optical clarity or adhesion. It provides structural stability while ensuring the product remains easy to apply.

Its hydrophobic surface treatment makes it effective as an anti-caking and flow aid in moisture-sensitive polymer powders and rubber compounding. This ensures that raw materials remain free-flowing during storage and processing stages.

In construction sealants and elastomeric systems, it reinforces the matrix and stabilizes paste viscosity across temperature fluctuations. This durability is essential for materials exposed to varying environmental conditions over time.

Aerosil R 972 is supplied as a low-bulk-density white powder, typically in multi-wall paper bags or bulk containers suited for pneumatic handling. Proper storage ensures the material maintains its performance characteristics for industrial use.

It is available in standard technical grade, with specifications aligned to fumed silica quality requirements for industrial use. Treated silica grades of this type are also offered in compacted form to reduce dust and improve handling.

These compacted versions are ideal for high-volume production environments where dust control is a priority. The material remains a versatile choice for manufacturers seeking reliable rheological control and moisture resistance.