A chemical reaction or process in which acetylene (a gas used in welding) is added to or reacted with another compound.
From acetylene + -ation (suffix forming nouns of processes). A technical term in organic chemistry for reactions involving the three-carbon acetylene molecule.
Acetylenation reactions were crucial for developing early synthetic chemicals—for example, acetylene was reacted with formaldehyde to create compounds that became plastics and medicines in the mid-20th century.
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