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Soda lime glass made from sand (silicon dioxide), soda (Sodium hydroxide or carbonate) and lime (limestone or other calcium source) The soda makes the sand melt about 2000F instead of about 3000F and the calcium makes it water resistant (sodium silicate is water glass and dissolves in water)

Borosilicate is glass made from sand and boron compounds. The advantage is that it has a much lower coefficient of expansion (COE) which means it doesn't change size much when heated, which means it doesn't crack when heated. The disadvantage is that while it softens when heated in a torch, it doesn't flow much and needs to be heated hotter than soda lime.

Boro is used for scientific glass apparatus and for art projects as well as cookware in the home. When you see someone working glass in a mall or arts showcase with a torch with a strong blue flame, they are working boro, in part because it can heat and cool without cracking with less care than is needed for soda lime.

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10y ago
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1mo ago

Soda-lime glass is more common and less expensive than borosilicate glass, but it is more prone to thermal expansion and may shatter when exposed to rapid temperature changes. Borosilicate glass is more heat-resistant due to its lower thermal expansion coefficient, making it ideal for laboratory glassware and kitchenware that needs to withstand high temperatures.

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Q: Differences between soda-lime glass and borosilicate glass?
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Related questions

How much does borosilicate glass weigh per cubic centimeter?

Borosilicate glass typically weighs around 2.23 to 2.35 grams per cubic centimeter.


Moderately thermostable glassware?

Thermostable glass is a borosilicate glass.


What are borostix used for?

Borostix are rectangular glass rods used in the borosilicate glass-art industry.


Is Borosilicate glass safe or toxic?

Borosilicate glass is generally considered safe for common use as it is a type of heat-resistant glass that is resistant to thermal shock. It is commonly used in laboratory glassware, kitchenware, and lighting fixtures. However, as with any material, ingestion of borosilicate glass is not safe and can cause harm.


Will fluoride react with borosilicate glass?

Yes, glass doesn't resist to HF and other compounds of fluorine.


Does pyrex hold on to caustic chemicals?

Pyrex is borosilicate glass and like all glass does not absorb any chemicals.


What is borosilicate glassware?

Glass types are named after the fluxes that are used to lower the melting temperature of the grains of silica sand. Borosilicate, therefore, contains boron, or a derivative, such as boric acid, or borax, to do this. Borosilicate glass is most often used for cookery or in laboratory apparatus, as it is very resistant to thermal shock and corrosion by acids.


What year did they change the pyrex glass formula?

Pyrex changed its glass formula in 1998 from borosilicate to tempered soda-lime glass.


What are the characteristics of soft glass?

Soft glass has a lower melting point compared to borosilicate glass, making it easier to work with for artists and hobbyists. It is more pliable and workable, but also tends to be more prone to thermal shock and can deform more easily during heating. Soft glass is also more affordable than borosilicate glass.


Glasswares that can be heated on asbestos wire gauze?

These are thermal resistant glasswares (from borosilicate glass).


Can you drill a hole in borosilicate glass tube?

yes. using a diamond bit and water.


Why is soda glass not suitable to be heated in a Bunsen burner?

Soda-lime glass is not suitable for heating in a Bunsen burner because it has a lower melting point compared to borosilicate glass, making it more prone to cracking or shattering when exposed to high temperatures. Borosilicate glass is better suited for withstanding thermal stress from heating applications.