LUDOX® - Consistent Quality, Supply, & Service

W.R. Grace is an expert in silica-based products and specialty chemicals and has produced them in the USA for over 100 years. One such product is LUDOX® colloidal silica, used in various applications within industries such as coatings, concrete, paper, emission control, thermal ceramics, and more. LUDOX® is made in the USA and offers reliable supply, quality, and versatility, which are difficult to find in imported materials.

About LUDOX® Colloidal Silica

LUDOX® products are discrete, amorphous, spherical silica particles dispersed in water that do not exhibit crystallinity or porosity. These colloidal silica products offer high reactivity with organic and inorganic materials, substrates, and polymers to provide binding and surface-modifying properties which improve chemical formulations in the coating, paint, refractory, concrete, and catalyst industries. Since colloidal silica consists of electrostatically stabilized silica in water, the cumulative water weight in these products incurs relatively higher shipping costs per weight of solids. Thus, US buyers can save more by purchasing LUDOX® colloidal silica that is both manufactured and stocked in the USA.
 

Find a Colloidal Silica Grade that Meets Your Specifications

LUDOX® is available in many grades ranging in particle size, surface charge, counter ion, pH, and silica content. Typically, colloidal silica with smaller particle sizes function better as binders to increase strength and durability in latex paint films, thermal ceramic refractories, and synthetic catalysts. This is due to the higher surface area than colloidal silica with larger particle sizes. Colloidal silica with larger particle sizes are excellent surface modifiers to provide higher friction and antiblocking properties. Some applications may require a colloidal silica grade with a specific surface charge, pH stability range, or counterion to provide adequate stability.

With several options available, a few grades may match your application’s specifications and requirements. Review the descriptions of the LUDOX® grades below to find one that meets your current needs.

Can't find your grade or not sure of the specifications? Check out our LUDOX® Selector Guide to find a colloidal silica grade based on functionality. You can also explore recommendations for LUDOX® based on specific applications on our technical resource page here.