Is Everything Flammable? 

This article will answer the question, is everything flammable? It also covers several topics about flammability, the degree of flammability, the examples of highly flammable material, and the best way to handle flammable material.

Is Everything Flammable?

Not all materials are flammable. Some things are classified as non-flammable materials or are within 0 degrees of flammability, for example, water.

What Is Flammability?

Anything that can catch fire when exposed to air is referred to as a flammable substance.

There are two categories of combustible materials: those that are Highly Flammable and those that are Extremely Flammable. The flash point of extremely flammable materials is 0 degrees Celsius, whereas their boiling point is 35 degrees Celsius. 

Materials classified as Highly Flammable have a flash point of 21 degrees Celsius and an unreachable boiling temperature. The moisture will likely determine whether or not this material will burn. Because of this, they are typically kept in environments with a high level of humidity. 

The following are some categories that can be used to classify flammable materials:

  • The substance catches fire quite quickly. 
  • Gases have a significant potential for ignition. 
  • Compounds that are sensitive to water are substances that generate combustible gases when exposed to water or fire.

What Is the Degree of Flammability?

The Hazardous Materials Identification System (HMIS) standard is used for flammability ratings by the United States Government, as well as by numerous regulatory bodies in the United States, and also by the National Fire Protection Association in the United States (NFPA).

  • 0th degree is materials that do not catch fire, for example: water
  • 1st degree is materials that require preheating before they can ignite, for example: lubricating oils & cooking oils
  • 2nd degree is components need to be heated to a reasonable degree or subjected to temperatures that are pretty high ambiently before they can ignite—for example, diesel oil
  • 3rd degree is liquids and solids that are capable of igniting at almost any temperature environment, for example, gasoline and acetone
  • 4th degrees is materials that can evaporate at average temperatures and pressures rapidly or scatter quickly in air and burn easily, such as butane and propane

What Are Examples of Highly Flammable Materials?

Chlorine Trifluoride

Chlorine trifluoride is the most explosive of all the harmful gases produced by chemical reactions. It is a colorless gas with a high reactivity level and may burn through concrete and gravel. 

Because chlorine trifluoride may burn without the need for an external source of ignition, it possesses an oxidizing capacity that is superior to that of oxygen, which contributes to the compound’s high flammability character. 

The chemical has only been utilized a handful of times, but every time it has, it has resulted in catastrophic explosions and been the cause of countless deaths.


A wide variety of powdered foods, including non-dairy creamer, spices, and dried milk, can easily catch fire. 

This is because they can catch fire easily from any angle, which causes them to ignite rapidly when they are in contact with a naked flame. Therefore, exercise caution when working with dried, powdered items like flour.

Beauty Products

There are a lot of compounds that are highly flammable in cosmetic products. Even some of our most beloved self-care items, such as hair mousse, hair spray, and antiperspirants, can be potentially harmful if not applied correctly or used unsafely.

If they come in aerosol cans, they offer an exceptionally high risk since not only will they catch fire if they are put in direct contact with a naked flame, but they also have the potential to blow up if they are left on a sunny windowsill. Keep these kinds of items in a cool, dark place.

What is the Best Way to Store Flammable Gas?

The correct handling and organization of combustible items are of the utmost importance when it comes to keeping a workplace free from hazards.

  • Never utilize combustible materials close to heat, flame, sparks, or static discharge sources, such as direct sunlight, furnaces, pilot lights, and the like, and never do so in locations that lack adequate ventilation.
  • The fumes of solvents have a denser consistency than air. These can accumulate in low-lying locations and travel many miles before reaching a source of ignition. 
  • Never keep combustible substances such as gasoline in a basement or garage because the fumes from these spaces can easily catch fire from sources such as a pilot light.
  • Rather than storing flammable liquids on an open shelf, keep them in compliant containers inside an NFPA-approved cabinet.
  • Excessive heat and ignite sources should be avoided.
  • All gas cylinders should be secured in racks or other techniques to keep them from falling.
  • Notice should be placed on doors leading to places where materials that provide a fire hazard are stored, alerting people to the dangers.
  • Only utilize refrigerators or freezers that have been approved for storing combustible or flammable liquids, if appropriate. Standard freezers should not be used to store such substances and should be clearly labeled.


Not all materials are flammable. Storage of combustible materials must be carried out correctly to avoid the ignition of the fire. 

Frequently Asked Question (FAQs): Is Everything Flammable?

Why are certain materials flammable?

Because of the method in which it breaks down when subjected to high temperatures, carbon, which is present in most combustible substances, is an especially suitable fuel for fires. 

As the material is heated, the carbon within it catches fire and contributes fuel to the fire, allowing it to expand farther into the material.

At what temperature a material is classified as explosive?

If a substance can ignite at a temperature lower than 37.8 degrees Celsius, then we classify it as explosive. If the material in question has a flash point between 37.8 and 93.3 degrees Celsius, then we classify it as volatile.


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