Is Corn Syrup Flammable

Corn syrup is a sweet syrup made from corn starch that is widely used in food and beverage products. It is a common ingredient in sweetened beverages, processed foods, and baked goods. The question is corn syrup flammable is an interesting one, and it has been the subject of much debate.

Corn syrup has a long history, dating back to the late 1800s when it was first produced as a cheap alternative to sugar. Today, it is a ubiquitous ingredient in the food industry, and its use has grown exponentially in recent years.

The purpose of this article is to explore the flammability of corn syrup and to provide an answer to the question of whether it is flammable or not. This is an important topic for those who work in the food industry and for consumers who use corn syrup in their own cooking and baking.

The importance of this topic lies in the potential hazards associated with handling and storing flammable substances. If corn syrup is found to be flammable, this could have significant implications for the food industry and for consumers. Therefore, it is important to understand the properties of corn syrup and its potential hazards.

What is Corn Syrup?

Corn syrup is a type of sweetener made from corn starch. It is commonly used in the food industry as a substitute for sugar because it is cheaper and has a longer shelf life.

There are two main types of corn syrup: light corn syrup and dark corn syrup. Light corn syrup is clear and colorless, while dark corn syrup has a caramel color and a stronger flavor.

To make corn syrup, corn starch is first extracted from corn kernels. The corn starch is then mixed with water and enzymes to break down the starch into smaller sugars, primarily glucose. The resulting mixture is heated to remove excess water, leaving a thick syrup that is about 90% glucose.

For light corn syrup, the glucose syrup is further processed with enzymes to convert some of the glucose into fructose, which makes it sweeter and more viscous. Dark corn syrup is made by adding molasses or caramel color to light corn syrup.

Corn syrup is widely used in the food industry to sweeten a variety of products, including candy, baked goods, and soft drinks. It is also used as a thickener in some foods and can be used as a substitute for honey or maple syrup in recipes.

Properties of Corn Syrup

Properties of Corn Syrup

Corn syrup has a number of physical and chemical properties that are important to consider when using it in food products.

Physical Properties:

  • Corn syrup is a viscous liquid that is typically clear and colorless (in the case of light corn syrup).
  • It has a high boiling point and a relatively low freezing point, which makes it useful for cooking and baking.
  • Corn syrup is hygroscopic, meaning it attracts and retains moisture, which helps to keep baked goods moist.

Chemical Properties:

  • Corn syrup is primarily composed of glucose, which is a simple sugar that is easily metabolized by the body.
  • It is resistant to crystallization, which makes it useful as a sweetener in candy and other confections.
  • Corn syrup is an acid-hydrolyzed starch, which means it is created by breaking down the starch molecules in corn into their component sugars.


  • Corn syrup is not flammable in its liquid state, but it can be combustible if it is heated to a high temperature and comes into contact with an open flame or spark.
  • However, the flash point (the temperature at which a substance will ignite if exposed to a spark or flame) of corn syrup is relatively high, which means that it is not considered to be highly flammable or explosive.
  • It is important to handle and store corn syrup carefully to prevent any potential hazards.

The Science Behind Flammability

Flammability is the ability of a substance to ignite and sustain combustion in the presence of an external source of ignition. The underlying science of flammability involves understanding the properties of the substance and the process of combustion.

The key factor that makes a substance flammable is its ability to release energy in the form of heat during combustion. This energy is typically stored in the chemical bonds between atoms in the substance, and when the substance is exposed to an external source of heat or ignition, the bonds are broken, and the energy is released. 

This energy release sustains the combustion process by providing the heat necessary to continue breaking down the chemical bonds and releasing more energy.

One important aspect of flammability is the role of oxygen in combustion. Oxygen is a highly reactive gas that is essential for combustion to occur. During combustion, oxygen molecules combine with the atoms released from the fuel to produce new molecules, including carbon dioxide, water vapor, and other byproducts. This chemical reaction releases energy in the form of heat and light, which sustains the combustion process.

There are several ways that flammable substances can ignite. One common method is through direct contact with a flame or other source of heat. 

When a substance is heated to its ignition temperature, the energy released from the chemical bonds is sufficient to sustain combustion, and a flame is produced. Other methods of ignition include sparks, electrical discharges, and frictional heating.

Can Corn Syrup Catch Fire?

Corn syrup is not flammable and cannot catch fire. This is because it is a non-volatile substance, meaning it does not produce any vapors that can ignite.

The chemistry of corn syrup is such that it is primarily composed of glucose and fructose, which are both carbohydrates. Carbohydrates do not burn easily because they contain a large number of oxygen atoms. 

Oxygen is a key element required for combustion to occur, but because carbohydrates already have a high oxygen content, they cannot provide enough oxygen to support combustion.

In contrast, other flammable substances such as gasoline, propane, or butane have low oxygen content and high vapor pressure, which allows them to easily produce flammable vapors that can ignite when exposed to a spark or flame.

The Dangers of Incorrect Information

Incorrect information can spread quickly and easily in today’s digital age, especially with the widespread use of social media platforms. People may inadvertently or deliberately share false information with their friends and family, often without realizing the harm it can cause.

Believing false information can have serious consequences. It can lead to people making incorrect decisions about their health, safety, or finances. 

For example, believing false medical information could result in someone using an ineffective or even harmful treatment, potentially leading to serious health consequences. False financial information could result in someone making poor investment decisions, leading to significant financial losses.

Moreover, incorrect information can contribute to the spread of fear and panic, leading to social unrest and distrust in authoritative sources of information. It can also contribute to the spread of conspiracy theories and other harmful beliefs, further eroding trust in scientific evidence and expertise.

That’s why fact-checking and research are crucial in today’s information age. It is important to verify the accuracy of information before sharing or acting on it and to rely on reputable sources of information. Critical thinking, skepticism, and a healthy dose of curiosity can help individuals avoid falling prey to false information and propaganda.

The Myth of Corn Syrup Flammability

The Myth of Corn Syrup Flammability

The myth that corn syrup is flammable likely originated from a misunderstanding of its properties. While corn syrup is a viscous liquid and can look similar to other flammable liquids, such as gasoline or alcohol, it is not volatile and, therefore, cannot catch fire.

The myth likely spread through word-of-mouth and the internet, with individuals sharing inaccurate information without verifying its accuracy. The rise of social media and the ease of sharing information has made it easier for myths and rumors to spread quickly and widely.

However, scientific evidence has repeatedly debunked the myth that corn syrup is flammable. As a non-volatile substance, it does not produce vapors that can ignite, and its high oxygen content makes it difficult to burn. In fact, corn syrup is commonly used in food manufacturing as a sweetener and thickener because of its non-flammable properties.

Several experiments have been conducted to demonstrate that corn syrup does not ignite, including pouring it over a lit candle or igniting it with a lighter. In all cases, the corn syrup did not catch fire or produce any visible flames.

Similar Myths and Misconceptions

There are several other myths and misconceptions related to flammability, including:

  1. Water conducts electricity: While it is true that water can conduct electricity, pure water is actually a poor conductor. It is the impurities in water that make it conductive, such as salts or minerals.
  2. Aluminum foil is a fire hazard in the microwave: While it is true that aluminum foil can cause sparks in the microwave, it is not necessarily a fire hazard. The sparks are caused by the metal reflecting the microwaves, but as long as the foil is not crumpled or touching the walls of the microwave, it is unlikely to cause a fire.
  3. Natural gas is more dangerous than propane: Both natural gas and propane are flammable gases that can be dangerous if not handled properly. While natural gas is lighter than air and can dissipate more easily, propane is heavier than air and can accumulate in low-lying areas.

It is important to debunk myths and misconceptions because they can lead to dangerous or incorrect behaviors. For example, believing that water is a good conductor of electricity could lead someone to underestimate the risks of electrical shock or to use electrical devices in or near water without proper precautions. 

Similarly, believing that aluminum foil is a fire hazard in the microwave could lead someone to avoid using it altogether, which is unnecessary and may be inconvenient.

Debunking myths and misconceptions through accurate information and scientific evidence can help people make better decisions and avoid unnecessary risks. It is important to fact-check information before sharing it and to rely on credible sources of information.

Related Post: Is Cornstarch Flammable? 

Corn Syrup in Everyday Life

Corn syrup is a common ingredient in food production and has several other uses. Here are some examples:

  1. Food production: Corn syrup is a popular sweetener and thickener in many processed foods, such as baked goods, candies, and beverages. It is used in place of sugar in some recipes because it is less expensive and easier to work with.
  2. Industrial applications: Corn syrup is also used in a variety of industrial applications, such as in the production of adhesives, paper products, and textiles.
  3. Medicine: Corn syrup is used as a vehicle for delivering medication, such as cough syrups and liquid antibiotics.

When handling corn syrup, it is important to take safety precautions to avoid spills or accidents. Here are some tips:

  1. Store corn syrup in a cool, dry place away from heat sources.
  2. Use caution when pouring or transferring corn syrup, as it can be sticky and difficult to clean up if spilled.
  3. Always read the label and follow any safety instructions or warnings.
  4. Wear protective clothing, such as gloves or an apron, if working with large quantities of corn syrup.

Alternative Sweeteners

Alternative Sweeteners

There are several alternative sweeteners available that can be used as a substitute for corn syrup. Here are some examples:

  1. Honey: Honey is a natural sweetener that is often used in baking and cooking. It has a distinctive flavor and contains antioxidants, but it is high in calories and can be expensive.
  2. Agave nectar: Agave nectar is derived from the agave plant and is often used as a sweetener in beverages and desserts. It has a low glycemic index, meaning it does not cause a rapid spike in blood sugar, but it is high in fructose and calories.
  3. Stevia: Stevia is a natural sweetener derived from the leaves of the stevia plant. It is calorie-free and does not raise blood sugar levels, but it can have a bitter aftertaste.
  4. Maple syrup: Maple syrup is a natural sweetener made from the sap of maple trees. It is often used in baking and cooking, but it is high in calories and can be expensive.

When compared to corn syrup, alternative sweeteners have both advantages and disadvantages. Here are some examples:

  1. Health benefits: Alternative sweeteners such as honey, agave nectar, and maple syrup contain some vitamins and minerals, while corn syrup has no nutritional value.
  2. Glycemic index: Alternative sweeteners such as agave nectar and stevia have a lower glycemic index than corn syrup, meaning they do not cause a rapid spike in blood sugar levels.
  3. Cost: Some alternative sweeteners, such as honey and maple syrup, can be more expensive than corn syrup.
  4. Taste: Alternative sweeteners can have different tastes and flavors compared to corn syrup, which may affect the final product’s taste.

Frequently Asked Questions

Why is corn syrup not flammable?

Corn syrup is not flammable because it does not contain enough volatile compounds to ignite. It is mostly made up of glucose and fructose, which are not flammable substances.

What are the risks of handling corn syrup?

The main risk of handling corn syrup is spills or accidents due to its sticky nature. If spilled, it can be difficult to clean up and can attract pests such as ants or flies. It is also important to handle it with care to avoid burns or injuries from hot corn syrup.

How does corn syrup affect blood sugar levels?

Corn syrup can cause a rapid spike in blood sugar levels due to its high glycemic index. This can be especially dangerous for individuals with diabetes or other blood sugar control issues.

Is corn syrup banned in any countries?

Corn syrup is not banned in any country, but some countries have restrictions on its use in certain foods due to health concerns. For example, the European Union limits the amount of corn syrup that can be used in certain food products.

What are some common uses of corn syrup in food production?

Corn syrup is a popular sweetener and thickener in many processed foods, such as baked goods, candies, and beverages. It is used in place of sugar in some recipes because it is less expensive and easier to work with. It is also used in industrial applications, such as in the production of adhesives, paper products, and textiles.


Corn syrup is commonly used as a sweetener and thickener in food production and has various other industrial applications. While there are alternative sweeteners available, each has its own advantages and disadvantages, and the choice of sweetener may depend on the recipe, taste preferences, and health goals.

However, is corn syrup flammable? Corn syrup is not flammable. Despite the spread of the myth that corn syrup is flammable, scientific evidence has debunked this misconception. It is important to understand scientific concepts such as flammability and to fact-check information before spreading it.

It is essential to continue fact-checking and researching information to avoid spreading misinformation and to promote accurate knowledge. By understanding scientific concepts and conducting thorough research, we can make informed decisions and better understand the world around us.