LUDOX® Grade Selector Guide

Lithium polysilicate is an aqueous solution of lithium oxide and silica featuring a silica to lithium oxide ratio of 4.8. It is commonly used as a concrete hardener and inorganic binder in coatings.

LUDOX® AM is a colloidal silica modified to be stable over a wide pH range. It is used primarily as a binder, surface modifier, and flocculant.

LUDOX® AS-30 is an ammonium-stabilized alkaline dispersion of amorphous silica. This colloidal silica is typically used as a binder in catalyst and high-temperature ceramic applications and as a cobinder and surface modifier in paints and coatings.

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® CL-X is an aqueous dispersion of monodisperse amorphous silica particles that are 22 nanometers. It is used to increase the coefficient of friction on paper, linerboard, and corrugated sheets.

LUDOX® DF is an aqueous dispersion of silica with a 12 nm particle size. It is designed to be used in floor coatings to increase friction and reduce slip.

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® HS-40 is an alkaline colloidal silica that offers a good balance between high binding strength and stability in coating and refractory applications.

LUDOX® PW-50 EC is an alkaline colloidal silica with low specific surface area. It is used as an abrasive in polishing slurries and as a surface modifier.

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.

LUDOX® SM-AS is an ammonium stabilized colloidal silica with 7 nm particle size. It is used as a binder in applications that require extreme temperatures.

LUDOX® TM-50 is a dispersion of anionic silica with an average particle size of 22 nm. It is often used as a surface-modifying agent in paper and textile coatings.

LUDOX® TMA is an anionic colloidal silica designed to be stable over a broad pH range. It is used to prepare ethyl silicate–silica hybrid binders that create slurries used in casting.