LUDOX® AM-FS is a pH and freeze stable grade of colloidal silica that is used as a binder in ceramics, water based adhesives, and latex paints.
Product Overview
LUDOX® AM-FS is a 28% aqueous dispersion of colloidal silica with a particle size of 12 nm. It is an excellent binder of metals, ceramics and other inorganic materials. It is formulated to give broader pH stability than standard alkali stabilized grades and can be incorporated at neutral to slightly acid pH to yield a stable formulation. Because of it's freeze stability LUDOX® AM-FS is recommended for use in low temperature climates.
Product Specifications
Colloidal Silica
Silica Content: 27-30%
Specific Surface Area: 198-258 m2/g
pH: 8.6-9.3
Specific Gravity: 1.2 (@25°C)
Particle Charge: Negative
Stabilizing Counter Ion: Sodium
Biocide: 500 ppm
Primary Chemistry: Colloidal Silica
Features & Benefits
Negative Sols, Anionic
Small Particle Size
Narrow Particle Size Distribution
Broad pH stability (4-10)
Excellent Binding Strength
Outstanding Formulation Stability
Freeze / Thaw Stable
Reinforcing Agent
Problems Solved
Poor stability of alkaline stabilized colloidal silica in acidic formulations.
Freezing of water based formulations when used in cold weather climates.
LUDOX® AM-FS is useful as an additive in functional coatings and adhesives as a reinforcing agent, binder, and surface modifier.