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Glass is made from

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Anonymous

14y ago
Updated: 8/17/2019

Glass is primarily made from silica (SiO2), which is basically just melted sand. People add a bunch of other ingredients like lead and sodium carbonate to improve the properties, but silica is the main ingredient.

add. Borosilicate glasses have boron added to the mix, and these glasses have a thermal expansion coefficient about one-third of that of ordinary glass. Hence their use for lab glassware, and in oven dishes under brand names such as Pyrex.

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Wiki User

14y ago

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