Levasil colloidal silica is an alkaline, aqueous dispersion of microfine colloidal silica that is approximately 30% solids by weight. The silica sol is sodium stabilized and the amorphous silica particles carry a negative surface charge. The particles are discrete, have a slightly rough, spherical shape, and are present in a narrow particle size distribution. The physical appearance of the sol is a translucent liquid, slightly more viscous than water.

Levasil colloidal silica is a standard slurry component and can be used in either primary or backup slurries. Akzo Nobel manufactures Levasil colloidal silica at plants throughout the world. These colloidal silica binders are known for their consistency and quality, batch to batch and plant to plant.