A primary alcohol is an alcohol in which the hydroxy group is bonded to a primary carbon atom.
[1] In contrast, a secondary alcohol has a formula “–CHROH” and a tertiary alcohol has a formula “–CR2OH”, where “R” indicates a carbon-containing group.
Examples of primary alcohols include ethanol and 1-butanol.
Methanol is also generally regarded as a primary alcohol,[2][3] including by the 1911 edition of the Encyclopædia Britannica.
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