Silica is second only to oxygen in weight percentage of the Earth's crust. It is found in an enormous diversity of silie minerals. The water soluble ionic forms of silie are the sodium salts of the general form [SiO 2 (OH) 2] 2but, depending on the pH and concentration, other polymerized species can also form.
Silica sand is used for all types of glass whatever the standard and specialty are. Every glass formulation needs its basic component. Silica sand has clear and strong chemical purity. Glass making cannot be possible without the help of silica sand. It is the primary determinant of color.