Float glass has the following composition:
- Silicate Sand, the base component in the form of sand (70 - 72%).
- Sodium Carbonate, sulphates and nitrates (approximately 14%).
- Calcium Carbonate, used as a melting agent to homogenize the mixture (about 10%).
- Various others oxides such as alumina and manganese to improve the physical properties of glass, including its resisance to atmospheric pollutants.
- For body-tinted glass, metal oxides can also be incorporated.