Table 1.

Chemical composition of different glass types [15].

Chemical Compositions [%]	Soda-lime Glass			Borosilicate Glass	Lead Glass
	Clear	Amber	Green
SiO2	73.2–73.5	71.9–72.4	71.3	70–80	54–65
Na2O + K2O	13.6–14.1	13.8–14.4	13.1	4–8	13–15
Al2O3	1.7–1.9	1.7–1.8	2.2	7	–
MgO + CaO	10.7–10.8	11.6	12.2	–	–
SO3	0.20–0.24	0.12–0.14	0.05	–	–
Fe2O3	0.04–0.05	0.30	0.56	–	–
Cr2O3	–	0.01	0.43	–	–
B2O3	–	–	–	7–15	–
PbO	–	–	–	–	25–30