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Ethene vs. Ethyne — What's the Difference?

By Tayyaba Rehman — Published on November 4, 2023
Ethene is a hydrocarbon with a double bond (C2H4), while Ethyne has a triple bond (C2H2). Both are simple alkenes and alkynes, respectively.
Ethene vs. Ethyne — What's the Difference?

Difference Between Ethene and Ethyne


Comparison Chart

Bond Type

Double bond
Triple bond

Molecular Formula


Common Name



Highly reactive

Main Industrial Use

Production of polyethylene
Welding (as fuel for oxyacetylene flame)

Compare with Definitions


Ethene belongs to the alkene family due to its carbon-carbon double bond.
The double bond makes Ethene reactive in addition reactions.


Ethyne is classified as an alkyne due to its carbon-carbon triple bond.
The triple bond gives Ethyne its characteristic reactivity.


Ethene has a molecular formula of C2H4.
Ethene's double bond is key to its many industrial applications.


Ethyne is a hydrocarbon with a triple bond.
Ethyne produces a high-temperature flame when burned.


Ethene is a gaseous hydrocarbon with a double bond.
Ethene is crucial in the production of many plastics.


Ethyne's molecular formula is C2H2.
Despite its simplicity, Ethyne has a range of applications.


Ethene is an unsaturated hydrocarbon.
Unsaturated hydrocarbons like Ethene can undergo addition reactions.


Ethyne is commonly referred to as acetylene.
Welders often use Ethyne, or acetylene, in combination with oxygen.


Ethene is also termed as ethylene in various contexts.
Ethene, or ethylene, acts as a plant hormone.


Ethyne is an unsaturated molecule with high reactivity.
The reactivity of Ethyne is evident in its usage in welding.


See ethylene.


See acetylene.


The organic chemical compound ethylene. The simplest alkene, a colorless gaseous (at room temperature and pressure) hydrocarbon with the chemical formula C2H4


The organic compound acetylene. The simplest alkyne, a colorless gaseous (at room temperature and pressure) hydrocarbon with the chemical formula C2H2.


(organic chemistry) Any alkene derived from ethylene


A colorless flammable gas used chiefly in welding and in organic synthesis


Ethylene; olefiant gas.


A flammable colorless gaseous alkene; obtained from petroleum and natural gas and used in manufacturing many other chemicals; sometimes used as an anesthetic

Common Curiosities

What kind of bond does Ethene have?

A double bond.

For what industrial purpose is Ethyne widely used?

Welding, specifically in oxyacetylene flames.

Is Ethene also called something else?

Yes, it's also known as ethylene.

Why is Ethene significant in plant biology?

It acts as a hormone regulating growth and ripening.

Which of the two, Ethene or Ethyne, is more reactive?

Ethyne, due to its triple bond.

What is the molecular formula of Ethene?


Which hydrocarbon, Ethene or Ethyne, is used in the production of plastics?


Which of the two, Ethene or Ethyne, is associated with welding applications?


Is Ethene an alkane, alkene, or alkyne?

It's an alkene.

How does Ethyne differ from Ethene in terms of bonding?

Ethyne has a triple bond, while Ethene has a double bond.

How about Ethyne?

It's an alkyne.

And Ethyne?


Why is Ethyne also called acetylene?

It's just a common name for the same molecule.

Do both Ethene and Ethyne occur naturally?

Yes, but Ethene has more natural sources, especially in plants.

Which gas has a garlic-like smell, Ethene or Ethyne?


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Author Spotlight

Written by
Tayyaba Rehman
Tayyaba Rehman is a distinguished writer, currently serving as a primary contributor to As a researcher in semantics and etymology, Tayyaba's passion for the complexity of languages and their distinctions has found a perfect home on the platform. Tayyaba delves into the intricacies of language, distinguishing between commonly confused words and phrases, thereby providing clarity for readers worldwide.

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