Acetylene

Acetylene is a hydrocarbon, belonging to the alkyne group. It is the simplest type of alkyne, as it has only two hydrogen atoms and two carbon atoms. Acetylene is an unsaturated organic compound because its four atoms are triple bonded through a covalent bond. It was discovered in 1836 by Edmund Davy. The chemical symbol is C₂H₂.

80% of all acetylene produced yearly in the United States is used for chemical synthesis. It is a toxic chemical; breathing the substance causes dizziness, headache and nausea.

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v t e Alkynes
Ethyne (or acetylene) (C 2H 2) Propyne (C 3H 4) Butyne (C 4H 6) 1 2 Pentyne (C 5H 8) 1 2 Hexyne (C 6H 10) 1 2 3 Heptyne (C 7H 12) Octyne (C 8H 14) 2 4 Nonyne (C 9H 16) Decyne (C 10H 18) 1 5
Preparations	Cracking Dehydrogenation of alkane, alkene Alkylation of alkynyl anion Dehydrohalogenation of dihaloalkane Fritsch–Buttenberg–Wiechell rearrangement Corey–Fuchs reaction Seyferth–Gilbert homologation
Reactions	Deprotonation Hydrogenation Diels–Alder reaction Halogenation Hydration Hydroboration Hydrohalogenation Thiol-yne reaction Alkyne trimerisation Pauson–Khand reaction Azide-alkyne Huisgen cycloaddition Sonogashira coupling Cadiot–Chodkiewicz coupling Glaser coupling Favorskii reaction