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LUDOX® TM-40 is an anionic colloidal silica with 22 nanometer particle size. It is commonly used to increase friction on paper and textiles.
CAS number: 7631-86-9
Density (g/cm³, lb/gal): 1.3, 10.8
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 Counter Ion: Sodium
Particle Charge: Negative
Biocide: 500 ppm;
Primary Chemistry:
Colloidal Silica
LUDOX® TM-40 contains 40% anionic silica with a particle size of 22 nanometers dispersed in water and stabilized with sodium ions. The particle size and electrostatic nature of LUDOX® TM-40 make it an excellent surface modifier. It is most often used as an anti-slip agent or frictionizer on paper, textiles and other materials.
Slipping of textiles during cutting and sewing that causes defects and production delays.
LUDOX® TM-40 can be used to reduce the sheen on textiles and to avoid seam slippage while cutting fabric or sewing.
The high purity and particle size of LUDOX® TM-40 make it an excellent abrasive for polishing slurries used in the manufacture of silicon wafers.
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