Na2O-CaO-SiO2 glasses (soda lime)

Question 1

What are the characteristics of soda lime glasses?

Answer 1

~ minimal phase separation
~ good chemical durability (Ca2+ blocks Na+ migration)
~ most commercially widespread (glass container, window glass, light bulbs)

Question 2

What raw material substitutions can be made for soda lime glass?

Answer 2

~ Alkali Li2O or K2O for Na2O
~ Alkaline earth MgO or SrO for CaO
~ Potassium carbonate for soda ash