LUDOX® LS is an alkaline colloidal silica with a 12-nanometer particle size. It is formulated to contain lower sodium counterion levels than LUDOX® HS grades.
LUDOX® LS is a 30% solids aqueous dispersion of 12 nm surface-modified silica. It is formulated to a lower pH than the HS grades of LUDOX® and contains fewer sodium stabilizing ions, making it particularly useful in applications where sodium can be detrimental. LUDOX® LS also has good compatibility in solutions that contain organic solvents.
LUDOX® LS is typically used as a binder in ceramic fiber refractory manufacturing to increase thermal shock resistance and durability to ceramic parts. It can also be used as a binder in water-based coating formulations that contain organic cosolvents. Here, LUDOX® LS provides added durability to dried films and improves heat and chemical resistance.
In adhesive applications, LUDOX® LS increases adhesion to glass and metal surfaces and increases shear strength, improving the durability of the cured adhesive.
LUDOX® LS is also an excellent source of silica for concrete densifier formulations. This property provides a performance advantage over other types of silica in this application. The small particle size of the amorphous silica in LUDOX® LS allows it to react with hydroxides by easily penetrating the porous surface of concrete, increasing its density and hardness.
Density, g/cm³, lb/gal: 1.2, 10
Boiling point at 760 mm Hg, °C (°F): 100 (212)
Melting point, °C (°F): 0 (32)
Vapor Pressure at 25°C, mm Hg: 24
Vapor Pressure at 38°C, mm Hg: 48
Stabilizing counter ion: Sodium
Particle charge: Negative
Biocide, ppm: 225
Primary Chemistry: Colloidal Silica
Excellent binding strength
Good stability in most water-based formulations at higher pH
Lower-sodium content
Small particle size
Narrow particle size distribution
Compatible with organic solvents
Poor thermal shock resistance or tensile strength of refractories
Failure of ceramic binders at high heat due to the presence of a flux material like sodium
Incompatibility with organic solvents in formulations
High-temperature ceramics and refractories
Water-based coatings
Concrete
Your document download will begin shortly.
ChemPoint will not under any circumstances release personal user information to individuals or companies. All information collection is solely used to support ChemPoint customers service communications. Read our Privacy Notice.
Thank you for your inquiry and interest in ChemPoint.
We will respond to you shortly.
ChemPoint will not under any circumstances release personal user information to individuals or companies. All information collection is solely used to support ChemPoint customers service communications. Read our Privacy Notice.
Thank you for your inquiry and interest in ChemPoint.
We will respond to you shortly.
ChemPoint will not under any circumstances release personal user information to individuals or companies. All information collection is solely used to support ChemPoint customers service communications. Read our Privacy Notice.
The document currently is provided in the following languages from the supplier at this time.
The document currently is provided in the following languages from the supplier at this time.
We’ve detected that you are located in a different region than the region selected on the website. Would you like to change your region?
Current Region: English - United States
