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Ludox HS-30 High pH is a 30% solids colloidal silica. It is formulated to a higher pH and is used as a binder in applications that require alkaline pH.
Ludox HS-30 High pH is an strongly alkaline, aqueous dispersion of silica with an average particle size of 12 nm. LUDOX®HS-30 high pH is notably useful as a binder in precision investment casting applications. It can also be used in coating formulations to improve durability and cohesion. LUDOX® HS-30 high pH also helps to improve soil resistance of anti-soil coatings and stool coatings.
CAS number: 7631-86-9
Density (g/cm³, lb/gal): 1.21, 10.1
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
Instability of silica dispersions in formulations with a very high pH.
Poor strength of molds formed for investment casting.
Investment Casting
Vacuum Formed Fibrous Shapes
Refractory Cements
Stool and Mold Coatings
Insulation Board
Ceramics Binder
Adhesives & Sealants
Elastomeric Foams
Paper and Film Coatings
Inorganic Coatings
Anti-Blocking Coating
Anti-Soil Treatment
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