Aerosil

Aerosil is a fumed silica product developed in 1942 by Degussa AG in Germany.

Additional recommended knowledge

Essential Laboratory Skills Guide

Daily Sensitivity Test

Recognize and detect the effects of electrostatic charges on your balance

Properties

Aerosil is pure silicon dioxide, made from vaporized silicon tetrachloride, oxidized in high-temperature flame with H₂ and O₂. Aggregated amorphous nano-sized primary particles gives free flow to powder materials. It gives thickening effect and thixotropy by dispersing to liquid materials. Standard hydrophilic products are made of primary particles from 7 nm to 40 nm, and also these products are surface modified to hydrophobic.

Applications

• As free-flow agent: toner, food, pharmaceutics.
• As rheology controller: paint, coating, adhesives, sealant, plastics.
• Others: film, fiber, ceramics, catalyst, glass.