Is Argon Gas Flammable? can argon boil, melt, explode?

While reading the chemistry book or working with argon in an upcoming project, you may get lots of questions. Indeed, there are lots of elements listed in the periodic table. Some of them are highly dangerous, explosive, and unsafe for livelihoods. Likewise, argon is also an element from the table which we may use in different applications. But the question is, is argon gas flammable?.

In short, argon is an inert gas, classified as noble gas of the periodic table. It is not flammable. So, there is no chance of burning until it reacts with oxygen or other oxidizers.

Still, we are not suggesting you place an argon cylinder near a fire. Let us share more information about argon gas and its flaming characteristics.

In this fireproof depot guide you’ll learn the following:

  • Is Argon Flammable?
  • Why Can’t We Call Argon Flammable?
  • can argon boil, melt, explode?
  • FAQs and more..

Related: Are Noble Gases Flammable? (Uses Of Noble Gases)

Definition of Argon

Argon is nothing but a chemical element (or gas) available in the periodic table. It has the atomic number 18. Scientifically, you can identify the argon with the symbol Ar. Another interesting thing is that argon belongs to group 18, which is considered a noble gas group. It means it has something which is not in other elements.

welding argon gas, Definition of Argon

According to Wikipedia, scientists have spoken about this argon as the third-most abundant gas (0.934%) in the atmosphere of Earth. It is more than 2x generous than water vapor, 23x than CO2, 500x than neon. Even, it is the most abundant noble gas in the crust of Earth. These statistics ensure that inflammable argon is a common gas on Earth.

The word “argon” is originated from the Greek word “ἀργόν.”It has a neuter singular form “ἀργός” that means “lazy” or “inactive.”The noble gases are believed to be “unreactive” as they do not stay active in almost any chemical reaction. Similarly, argon remains lazy when we talk about its response with others. As it has no reactive nature, it is sure to consider that argon is not flammable.

Is Argon Flammable? flashpoint of argon

Again, we are back to the target.

Can you imagine thinking of a situation to live in where flammable gas is around us? Thanks to argon, as it is not flammable. It was around us from the beginning, and we are safe for its being inflammable.

According to OSHA, one substance can be identified as explosive when it is a liquid with a flashpoint of ≤ 199.4°F or 93°C. But you can think of argon. It is a gas, but you can consider it as a liquid according to the definition. However, the central fact is that argon doesn’t get fire in the air or even contact with pure oxygen.

So, it is clear to say argon is in no way flammable. For its nature, welders use gas in welding. It will not cause a fire even if the welded thing is hotter.

If you are a more visual learner, here is a video about Argon – THE HOTTEST GAS ON EARTH on YouTube.

Why Can’t We Call Argon Flammable?

Argon has unique electrochemistry, which is why it is not flammable. Let us discuss more on this.

Electrons leave the oxygen atoms during the burning processes. Then, they complete the electronic shell of the element with which oxygen is reacting. But when we look at argon’s structure, it does not need doing the same work. After all, it has an originally entire electronic shell. Also, the outer shell is full of 8 electrons. It has no place to invite other electrons.

So, the natural structure of argon prevents it from being flammable. Still, if you want to get flames, argon needs forcefully reaction with other periodic elements.There are only a few argon compounds that can do so.

Can Argon Explode?

It is not mandatory to answer this strange question, right? We have already givenyou the information. If it doesn’t react with other elements, then why can we think it to explode?

Surprisingly, this question is essential. Argon cannot react, but it has the traits of a gas. This “gas” nature is enough to explode under certain conditions.

Think of a cylinder full of argon gas. You keep it near extreme heat. What will happen?

Gas will expand more, and the metal won’t expand at the same rate because metal is a more robust material and has astronger bond than gas. The whole scenario will be disastrous after consistent heating for a certain period. The cylinder of argon gas will explode.

So, argon can be dangerous as gas when you keep the gas-filled cylinder near high temperatures.

Can Argon Melt?

It is already a gas, so melted gas is unusual. However, argon can melt at 301.81°F or -189.34°C. But you can find solid argon if it is in the coldest temperature. This is not so easy to see except for any argon gas-related research labs.

Can Argon Boil?

Argon can boil when the temperature is lower, like -302.526°F or -185.848°C. The boiling and melting points of argon gas are indeed quite closer. If you cannot control the temperature, argon may conduct sublimation like turning solid to gas.

Frequently Asked Questions (FAQs)

There are several questions available with “is argon gas flammable.” You may enjoy the answers:

1. What does it mean by argon poisoning?

Argon is not flammable. Also, it is not poisonous for health. Still, you can feel like you are being affected when you inhale some of it. You may feel dizziness, nausea, vomiting like health issues.

2. What does argon smell like?

You will feel no smell of argon as it is odorless. Even it is tasteless, colorless, and non-toxic.

3. Is non-flammable argon gas safe for humans?

When you inhale argon excessively, you may get several health problems. It can may you feel weak as it is classified as an asphyxiant.

4. Is argon heavier than the air?

Argon is comparatively heavier than air. It is available mainly in low-lying areas. Also, this noble gas is slightly water-soluble.

5. Is argon gas flammable or explosive?

Argon is inflammable, but it can explode when placing the argon cylinder near extreme heat.


“Is argon gas flammable?” – there is no doubt about it to cause fire alone. It has no specific color, odor, or toxicity. Also, it has no scope to add more electrons to its outer sole. So, there is no chance of getting flames.

We have discussed the “burning” questions about argon in this article. We hope, now, you have the clarity of argon gas if it is flammable or not. Thanks for reading this article.

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