LUDOX® Grade Selector Guide

LUDOX® AS-40 is an alkaline, 40% solids aqueous dispersion of colloidal silica with a particle size of 22 nm. It is stabilized with ammonium and used as a high-temperature binder and catalyst in a wide range of industrial applications.

LUDOX® CL is an acidic 30% aqueous dispersion of surface-treated colloidal silica. This LUDOX® grade carries a positive surface charge and is used as a surface modifier for paper.

LUDOX® CL-P is an acidic aqueous dispersion of surface-treated silica. It carries a positive surface charge and is typically used as a frictionizing aid for paper.

LUDOX® HS-30 is a colloidal silica with an average particle size of 12 nm. It is a binder in casting and ceramics applications and a cobinder to increase abrasion resistance in latex paint and coatings.

LUDOX® SM is an amorphous colloidal silica with a particle size of 7 nm. It is a highly temperature-stable binder used in coatings and refractories and as a pozzolanic additive for concrete densifiers.