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The Food-Grade Glass: Soda-lime Glass

Soda-lime glass, equally as known soda-lime-silica glass, is the most common glass type and the affordable form of glass, mainly utilized for windowpanes, bottles, and jars for beverages, food manufacturing, packaging, medical and scientific industry.

Soda-lime glass composed of about 90% of manufactured glass made and has been typically manufactured for hundreds of years. Some glass kitchenware is made of soda-lime glass and often compared to borosilicate glass. It is a mixture combination of silica, soda, and lime.

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Soda-lime Glass Composition

Soda-lime glass is made primarily from 3 fundamental components. The first material comprises silica, or silicon dioxide, which makes up 60%-75& of the finished product.

Another 12%-18% is made of soda, or sodium oxide, to cautiously lower the silica’s melting temperature, and lime, also known as calcium oxide, another 5%-12%, and acting as a stabilizer.

View more of the soda-lime glass bottles:

Soda-lime Glass Properties

The atoms in soda-lime glass are combinations of unbreakable atomic bonds and are highly connected, hence it is hard for other substances to affect its structure, corrode the glass, and very chemically stable.

Great to employ around chemicals, especially if tempered to increase its thermal shock resistance. Soda-lime glass isn’t fully unaffected to chemical usage, there’s another more specialized glass type can be more immune.

Soda-lime glass is about 6-7 on the Mohs hardness scale, which shows how much resistant to abrasion material is. Materials like diamond scores at 10 ratings. Also, Soda-lime glass when tempered with heat or chemicals can be stronger triple times. Chemical tempering naturally makes it more mechanical strength, became scratch-resistant and harden.

It is on top of that an electrical insulator and vulnerable to thermal shocks. The glass material doesn’t transmit electricity, due to high specific resistivity and a low dielectric constant. Absolutely good for insulating electrical items as well.

Soda-lime glass’s refractive index is roughly 1.5, transmit visible light which means only 4% of the light that hits it will be reflected. The rest of the light passes through, making it a perfect material where light transmission is crucial. And lastly thanks to the soda and lime in the soda-lime glass, it can be softened repeatedly without loss of quality. This attribute makes it a splendid material for recycling.

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Soda Lime Glass Applications

Presently, the popularity of soda-lime glass is immense and can be easily found across many industries. You can discover it in packaging for food and beverage industries, in architectural and construction applications as windowpane, in the electrical field.

Soda-lime glass is additionally used as a more cost-effective alternative to borosilicate glass products in medical, scientific applications. Also, ideal for personal use as décor, while the tempered one utilizes in consumer kitchenware.

View more of the soda-lime glass jar:


Food safe glass is regulated by the federal Food & Drug Administration (FDA). Glass and plastic containers are also considered “indirect food additives” by the FDA. These are the substances that may come into contact with food from the packaging or processing equipment but are not intended to be added directly into the edible, The FDA has determined that both borosilicate and soda-lime glass are Generally Regarded as Safe (GRAS). The GRAS designation is given to substances added to food directly or indirectly that are considered safe by the experts

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