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LUDOX® HS-40 is a 40% aqueous dispersion of 12 nanometer particle size colloidal dispersion


Product Overview

LUDOX® HS-40 is an aqueous mono-dispersion containing 40% colloidal silica.  It can be used in a variety of applications, including coatings and catalyst formulations and as a high temperature binder in investment casting and refractory.  LUDOX® HS-40 is counter-stabilized with sodium.  

Product Specifications

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 ppm: 240
Primary Chemistry: Colloidal Silica

Features & Benefits

Excellent stability
High binder performance
Small particle size
Narrow particle size distribution

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