Emilie Meyer
Non-stick pans are coated with a material called polytetrafluoroethylene (PTFE), commonly known as Teflon. However, not all non-stick pans use Teflon; other non-stick coatings have become available, such as ceramic, anodized aluminium, silica, enameled cast iron, and seasoned cookware. Teflon is a brand name for PTFE, and while all Teflon coatings are PTFE, not all PTFE coatings are Teflon. PTFE is known as a forever chemical due to its longevity, and can take decades or even hundreds of years to break down.
| Characteristics | Values |
|---|---|
| Are all non-stick pans made with Teflon? | No, not all non-stick pans use Teflon. |
| Alternative non-stick coatings | Mixture of titanium and ceramic, anodized aluminium, silica, enameled cast iron, seasoned cookware, cast iron, carbon steel, stainless steel, cast aluminium, stoneware, ceramic, silicone, Xylan, Starflon |
| Teflon safety concerns | Potential release of toxic gases if stove-top pans are overheated in inadequately ventilated spaces. |
| Teflon safety | Teflon is considered safe for everyday home cooking as long as temperatures do not exceed 500°F (260°C). |
| Teflon safety precautions | Don't preheat an empty pan. Make sure there is some food or liquid in pots and pans before you preheat. |
| Teflon coating durability | Teflon brand non-stick coatings outperform competitors, including ceramics, in terms of long-lasting non-stick performance. |
| Teflon coating maintenance | Teflon non-stick pans can be put in the dishwasher, but always follow the manufacturer's care instructions. |
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What You'll Learn
Non-stick coatings other than Teflon
Not all non-stick pans are made with Teflon. In the 21st century, other coatings have been marketed as non-stick, such as anodized aluminium, silica, enameled cast iron, and seasoned cookware.
Ceramic Coating
Ceramic non-stick pans are coated with silica (silicon dioxide) to prevent sticking. The coating is applied using a sol-gel process without the use of PFAS. The coating layer of ceramic non-stick pans starts to break down at about 370°C (700°F). Ceramic coatings are harder and better withstand high temperatures than PTFE-based coatings. However, their non-stick properties may be somewhat lower than those provided by PTFE-based coatings.
Xylan Coating
Xylan is a trademarked fluoropolymer-based industrial coating commonly used in non-stick cookware. It is formulated as a composite system that typically combines one or more fluoropolymers such as PTFE, perfluoroalkoxy alkane (PFA), and fluorinated ethylene propylene (FEP).
Stoneware
Stoneware has been used for thousands of years and is naturally non-stick when seasoned. It is scratch-resistant and can be heated to very high temperatures.
Silicone Coating
Silicone is a synthetic rubber that is mainly used in bakeware and kitchen utensils. It is not suitable for direct heat, so it is best suited for baking.
Seasoned Cookware
Cast iron, carbon steel, stainless steel, and cast aluminium cookware may be seasoned before cooking by applying a fat to the surface and heating it to polymerize it. This produces a dry, hard, smooth, hydrophobic coating, which is non-stick when food is cooked with a small amount of cooking oil or fat.
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Safety concerns and Teflon
Teflon is a brand name for polytetrafluoroethylene (PTFE), a chemical coating that creates a nonstick, waterproof, noncorrosive, and nonreactive surface. PTFE is a synthetic chemical made up of carbon and fluorine atoms. It was first created in the 1930s and is used in various industries and products, from industrial and pharmaceutical applications to cookware and cosmetics.
While Teflon-coated cookware offers convenience and ease of cleaning, there have been safety concerns about its use, particularly around the potential release of toxic fumes when overheated and the presence of chemicals like perfluorooctanoic acid (PFOA) in its production.
Safety Concerns with Teflon
PTFE-based coatings, like Teflon, can rapidly lose their non-stick properties if overheated, releasing toxic fumes. All manufacturers recommend that temperatures be kept below 260°C (500°F). At higher temperatures, the coating may begin to break down, emitting toxic chemicals. These fumes can cause temporary flu-like symptoms, known as polymer fume fever or "Teflon flu".
The safety concerns around Teflon have centred on PFOA, a chemical previously used in its production. PFOA has been linked to various health conditions, including kidney and testicular cancer, ulcerative colitis, thyroid disease, and other conditions. While PFOA is no longer used in the manufacturing of Teflon products, it was present until 2013, and investigations into the safety of Teflon continue.
Another concern is the potential for PTFE particles to flake off from the cookware. However, these particles are not harmful when ingested. Additionally, the use of Teflon-coated cookware may pose a risk to pet birds, as the fumes are deadly to them due to their fragile respiratory systems.
Alternatives to Teflon
Due to the safety concerns and ongoing investigations, some people opt for non-Teflon alternatives for their cookware. Ceramic non-stick coatings, for example, are marketed as PFAS-free and perform better than Teflon when new. Other alternatives include anodized aluminium, silica, enameled cast iron, and seasoned cookware, such as cast iron, carbon steel, and stainless steel.
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Ceramic non-stick pans
Not all non-stick pans are made with Teflon. Ceramic non-stick pans, for example, are made with a mixture of titanium and ceramic that is sandblasted onto the pan surface and then fired at 2,000 °C (3,630 °F) to produce a non-stick ceramic coating. This coating is made from silica (silicon dioxide) and is applied using a sol-gel process without the use of PFAS. Ceramic non-stick pans are designed to be non-toxic and safe. They are also easy to clean and come in gorgeous colourways.
Teflon, or PTFE, is a synthetic chemical used in traditional non-stick kitchenware. When exposed to high temperatures, PTFE-coated pans can release toxic fumes known as "forever chemicals" which have been linked to adverse health effects. Ceramic non-stick pans, on the other hand, are made from a naturally derived material that is non-stick without the use of toxic chemicals.
While ceramic non-stick pans are a healthier alternative to Teflon-coated pans, they do have some drawbacks. The coating on ceramic non-stick pans can be easily scratched, and they may degrade quicker than Teflon-coated pans. However, ceramic non-stick pans perform better than Teflon when new, and they are also more environmentally friendly.
Some popular brands of ceramic non-stick pans include GreenPan and Caraway. GreenPan has been perfecting its non-stick, non-toxic ceramic cookware for over a decade, and their products are known for being easy to clean. Caraway's ceramic non-stick pans are also non-toxic and have been praised for their sophisticated colours and simple cleaning process.
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Alternatives to Teflon
Not all non-stick pans are made with Teflon. The non-stick coating, polytetrafluoroethylene (PTFE), is commonly known as Teflon. PTFE is a synthetic chemical made up of carbon and fluorine atoms. While Teflon is a well-known brand of PTFE, other non-stick coatings have emerged.
There are several alternatives to Teflon that you can consider:
- Ceramic: Ceramic non-stick pans are coated with silica (silicon dioxide) to prevent sticking. They are non-toxic and safe to use. However, they are known to be less durable than traditional non-stick pans and can be easily scratched.
- Carbon Steel: Carbon steel pans are a good alternative to Teflon as they are effectively non-stick. They are also lighter than cast iron and ceramic pans. However, they require seasoning and maintenance.
- Cast Iron: Cast iron pans can be seasoned before cooking by applying fat to the surface and heating it to create a hydrophobic coating. They are durable and can be heated to very high temperatures. However, they are heavy and have limitations on what you can cook in them.
- Stoneware: Stoneware has been used for thousands of years and is naturally non-stick when seasoned. It heats evenly, is scratch-resistant, and can withstand very high temperatures.
- Stainless Steel: Stainless steel pans can also be seasoned to create a non-stick surface. However, they may require more oil, fat, or butter, and there is a learning curve to using them effectively.
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History of Teflon
Teflon, or polytetrafluoroethylene (PTFE), is a synthetic chemical made up of carbon and fluorine atoms. It was first created in the 1930s and was found to provide a nonreactive, nonstick, and almost frictionless surface. The nonstick surface makes Teflon-coated cookware convenient to use, easy to clean, and requiring of little oil or butter, making it a low-fat cooking option.
The story of Teflon began on April 6, 1938, when Dr. Roy J. Plunkett, working with gases related to refrigerants, discovered that a sample of tetrafluoroethylene had polymerized spontaneously into a white, waxy solid to form polytetrafluoroethylene (PTFE). PTFE is inert to virtually all chemicals and is considered the most slippery material in existence, making it one of the most valuable and versatile technologies invented.
The first Teflon products were sold commercially in 1946. By 1951, Dupont had developed applications for Teflon in commercial bread and cookie-making. However, the company avoided the market for consumer cookware due to potential problems associated with the release of toxic gases if stove-top pans were overheated in inadequately ventilated spaces.
In the following years, Teflon began to be used as a coating for cookware, with a French engineer coating his wife's cooking pans with the substance to prevent food from sticking. This led to the formation of the Tefal company in 1956, which specialized in manufacturing non-stick pans.
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Frequently asked questions
No, not all nonstick pans are made with Teflon. While Teflon is a common brand of polytetrafluoroethylene (PTFE) used for nonstick pans, there are other coatings available such as anodized aluminium, silica, enameled cast iron, and seasoned cookware.
Some alternatives to Teflon include ceramic, cast iron, carbon steel, and stainless steel.
Teflon has been a controversial cookware material due to concerns about its safety. When overheated, Teflon can release toxic fumes, which can cause polymer fume fever.
Nonstick pans without Teflon can offer a safer and more durable option. For example, ceramic nonstick pans are marketed as PFAS-free and have been found to outlast Teflon-coated pans.
To avoid the potential release of toxic fumes, it is recommended to keep the temperature below 260°C (500°F) when using a nonstick pan with Teflon. Additionally, it is advised to avoid preheating an empty pan and to use non-metallic utensils to prevent scratching the coating.
