Canning and Fish Packaging Technology

Unit 14 - Glass containers and Closures

14.1.2.Chemical composition of Glass
The major components are,
Silica (SiO₂) - 72%
Lime (CaO) - 11%
Soda (Na₂O) - 14%

Other minor components are,
Alumina Al₂O₃ - 1.7%
Magnesia MgO - 0.3%
Potash K₂O - 0.3%