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What Is Borosilicate Glass And Why Is It Better?


Most people don't realise that not all glass is the same. Borosilicate glass is a special type of glass that combines two highly concentrated chemicals: boron trioxide and silicon dioxide. These safe and environmentally friendly chemicals make borosilicate glass more heat resistant than other forms of glass on the market.


What is borosilicate glass?

Borosilicate glass was first developed in Jena in the late 19th century by the German glassmaker Otto Schott. This early borosilicate glass is therefore known as Jena glass. After Corning Glass Works introduced heat-resistant glass in 1915, the name became synonymous with borosilicate glass in the English-speaking world. Borosilicate glass is the name of a family of glasses with various members tailored for completely different purposes. The most common today are borosilicate 3.3 or 5.0x glasses such as Duran, Corning 33, Corning 51-V (clear), Corning 51-L (amber), International Cookware's NIPRO BSA 60 and BSC 51.

High Borosilicate Blue Color Glass Water Jug And Cup

 High Borosilicate Blue Color Glass Water Jug And Cup

What is the difference between borosilicate glass and soda lime glass?

Soda lime glass is the most common type of glass. You can find it in a variety of applications, from window glass to glass jars. Soda lime glass accounts for approximately 90% of all glass made in the world.


The main difference between soda lime glass and borosilicate glass is their silica and boron trioxide content. Soda lime glass typically contains 69% silica, compared to 80.6% borosilicate glass. It also contains much less boron trioxide: only 1%, compared to 13% for borosilicate.


Four factors distinguish borosilicate glass from its conventional soda-lime counterpart. As mentioned above, it is resistant to thermal shock, which means you can pour boiling water into a borosilicate glass jug and it will not break. Borosilicate glass is harder than ordinary glass because it can be moulded into more complex shapes. It is also more resistant to acid attack (which is why you will usually find it in use in chemical laboratories).

High borosilicate material Heat Resistant Double Wall Glass Coffee Mug

 High borosilicate material Heat Resistant Double Wall Glass Coffee Mug

Is borosilicate glass safe to drink?

Borosilicate glass is safe to drink, just like ordinary glass. Borosilicate glass can help you improve sustainability and keep plastic waste out of landfills, which is good news for the environment. Plastic pollution is a major problem, so using a reusable water bottle or bottle made from borosilicate glass can be a big help. 

Hand Made - Clear Double Walled Glass - Perfect for coffee, tea, iced coffees and cold drinks.

Perfect for Hot or Cold Drinks: The high borosilicate glass mug keeps the temperature of liquid hot or cold for a longer period of time while the outer borosilicate glass wall remains comfortable to the touch.


Is borosilicate glass durable?

Borosilicate glass is very durable. In fact, that is why it is so well known and popular. Borosilicate glass requires higher temperatures than ordinary soda lime glass. The higher manufacturing temperature gives it heat resistance. You need to apply more heat to change the chemical structure of the glass. The higher manufacturing temperature also makes the glass stronger. You can put borosilicate glass on the floor and it will not break like ordinary glass.

High Borosilicate Glass Mug

High Borosilicate Glass Mug

Why is borosilicate glass better?

Borosilicate glass is better than ordinary glass for a number of reasons.


Firstly, borosilicate glass expands when heated by only half the amount of ordinary soda-lime glass. Its low coefficient of thermal expansion means that it is less likely to break than ordinary glass.


Secondly, borosilicate glass is harder and stronger than soda lime glass. This feature makes it an ideal water container to take with you when travelling.

Thirdly, borosilicate glass is more malleable than ordinary glass, allowing more complex shapes to be made. Some manufacturers make borosilicate glass into vacuum insulated containers to keep your drinks warm or cold. As before, this property makes borosilicate glass an ideal material for making sustainable glass bottles. These bottles are durable and do not contain any Bisphenol A, which can harm your health.


Fourthly, borosilicate glass is acid-resistant, whereas soda-lime glass is much less so. Beer has an acidity of 3.3, which means that putting them in borosilicate glass is probably better than regular glass.

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