Sodium Silicate Sodium Silicate is the common name for compounds with the formula Na2(SiO2 ) n O. It is also known as Waterglass or Liquid Glass. These materials are available in both aqueous solution and solid form. Sodium Silicate is a useful binder of solids, such as Vermiculite and Perlite. When blended with the aforementioned lightweight aggregates, Sodium Silicate can be used to make hard, high insulation boards used for Refractories, Passive Fire Protection and High Temperature Insulations. When mixed with finely divided mineral powders, such as vermiculite dust, one can produce high temperature adhesives. Sodium Silicate Solutions for the Cement Industry are used along with complex binders to improve their mechanical, chemical and thermal characteristics and are typically available with the following properties:

Physical Properties Specific Gravity (At 200C) g/cm3 1.38 - 1.45 Density (At 200C) Baume 40 - 46 Chemical Composition Sodium Oxide (Na2O) % 9 - 13 Silicon Dioxide (SiO2) % 28 - 32