COMPOSICIÓN DE VIDRIO SODOCÁLCICO INCOLORO

Composición de vidrio sodocálcico incoloro, que comprende en masa SiO₂ de 68 a 78%, Na₂O de 8 a 18%, K₂O de 0 a 10%, CaO de 7 a 12%, MgO de 0 a 10%, ZnO de 0 a 10%, BaO de 0 a 10%, Al₂O₃ de 0 a 3%, B₂O₃ de 0 a 1%, SrO de 0 a 1%, menos de 0,078% de azufre total expresado en forma de SO₃, a lo sumo 0,12% de cerio total expresado en forma de CeO₂, de 50 a 1200 ppm de hierro total expresado en forma de Fe₂O₃, sin aporte voluntario del elemento Mo, As, Sn y Sb, y de redox inferior a 45. A colorless soda-lime glass composition comprising by weight from 68 to 78% SiO2, from 8 to 18% Na2O, from 0 to 10% K2O, from 7 to 12% CaO, from 0 to 10% MgO, from 0 to 10% ZnO, from 0 to 10% BaO, from 0 to 3% Al2O3, from 0 to 1% B2O3, from 0 to 1% SrO, less than 0.078% total sulfur expressed in the form of SO3, at most 0.12% total cerium expressed in the form of CeO2, from 50 to 1200 ppm total iron expressed in the form of Fe2O3, without the intentional addition of Mo, As, Sn and Sb species, and with a redox lower than 45.