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.
LUDOX® TMA is a slightly acidic, aqueous dispersion of negatively charged silica particles with an average particle size of 22 nanometers. It is a unique type of colloidal silica in that it is not stabilized by a counterion like other LUDOX® grades. LUDOX® TMA is stable in a pH range of 4–10, a much broader range than most colloidal silica. This makes it a versatile chemical tool for formulators working with both acidic and alkaline formulation conditions.
LUDOX® TMA is often used to prepare hybrid-type binders composed of ethyl silicate and colloidal silica for ceramic slurries used in precision investment casting applications. It is stable in extreme temperatures and can also be used as a binder for ceramic materials used in refractory applications.
LUDOX® TMA may also be used in coating formulations, where it serves as a useful material to provide surface modification and increase the coefficient of friction.
Density (g/cm³, lb/gal): 1.24, 10.3
Boiling point (760 mm Hg), °C (°F): 100 (212)
Melting point, °C (°F): 0 (32)
Vapor pressure (25°C, mm Hg): 24
Vapor pressure (38°C mm Hg): 48
Stabilizing counterion: None
Particle charge: Negative
Biocide (ppm): 25
Primary Chemistry: Colloidal Silica
Anionic particles
Intermediate particle size
Silica is stabilized without the use of counterions
Narrow particle size distribution
Broad stability from pH 4 to 10
Contains low sodium levels
Great surface modification performance and formulation stability
Instability of colloidal silica dispersions in acidic or alkaline formulations
Insufficient binding within slurries used in investment casting processes
Failure of ceramic and refractory binders when exposed to high temperatures
Low coefficient of friction on surfaces
Investment casting
Refractories
Coatings
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
.png)
Hi, let us know if you have any questions as you visit our website.
