Types of Glass

	Typical container glass	Typical float glass	Approximate limits
SiO2	74.42	71.86	63-81
Al2O3	0.75	0.08	0-2
MgO	0.30	5.64	0-6
CaO	11.27	9.23	7-14
Li2O	0.00	0.00	0-2
Na2O	12.9	13.13	9-15
K2O	0.19	0.02	0-1.5
Fe2O3	0.01	0.04	0-0.6
Cr2O3	0.00	0.00	0-0.2
MnO2	0.00	0.00	0-0.2
Co3O4	0.00	0.00	0-0.1
TiO2	0.01	0.01	0-0.8
SO3	0.16	0.00	0-0.2
Se	0.00	0.00	0-0.1

Soda-lime glass composition (containers, float glass e.g. for windows), mol%

Approximate E glass composition in mol%:

	Typical E glass	Approximate limits
SiO2	56.99	43-74
B2O3	6.12	0-8.5
Al2O3	8.78	6-10
MgO	6.50	0.5-9
CaO	19.64	15-28
Na2O	0.61	0-2.5
K2O	0.00	0-0.5
Fe2O3	0.13	0-0.3
TiO2	0.44	0-1
F	0.70	0-2

TV panel glass composition, in mol %

	Typical TV panel glass	Approximate limits
SiO2	71.93	62-85
Al2O3	1.42	0.5-2.5
MgO	0.00	0-2.7
CaO	0.06	0-4.5
SrO	6.23	0.5-7.5
BaO	4.23	0.5-6.5
Li2O	0.02	0-1.5
Na2O	8.66	6-11
K2O	5.63	4-7
Fe2O3	0.02	0-0.02
TiO2	0.38	0-0.5
CeO2	0.11	0-0.3
ZrO2	0.79	0-2
PbO	0.00	0-1
ZnO	0.44	0-1.5
As2O3	0.00	0-0.1
Sb2O3	0.07	0-0.2
F	0.00	0-3

Futher borosilicate glass compositions

Low expansion borosilicate glass, e.g. Pyrex ^TM, Kimax ^TM, Duran ^TM, or Jenaer Glas ^TM, approximate glass composition in mol%:

	Typical low expansion borosilicate glass	Approximate limits
SiO2	83.34	65-85
B2O3	11.19	8-15
Al2O3	1.33	1-5
CaO	0.03	0-2.5
Na2O	4.08	3-9
K2O	0.04	0-2
BaO	0.00	0-1

Fiber wool borosilicate glass, approximate composition in mol%:

	Typical fiber wool borosilicate glass	Approximate limits
SiO2	63.51	50-78
B2O3	2.89	2.5-9
Al2O3	2.92	0-4
MgO	5.22	1.5-8
CaO	8.97	5-15
Na2O	15.70	12-18
K2O	0.54	0-1.5
Fe2O3	0.12	0-0.3
F	0.00	0-2.5
SO3	0.13	0-0.2