Primary Amines: The amine in which one hydrogen atom of the
ammonia is replaced by an alkyl group is called a primary amine.
Secondary Amines: The amine in which two hydrogen atoms of
ammonia are replaced by alkyl groups is called a secondary amine.
Tertiary Amines: The amine in which all the three hydrogen
atoms are replaced by alkyl groups is called a tertiary amine.
Reduction: The addition of hydrogen to a substance is
Methylation: The reaction in
which hydrogen atoms of an amine are replaced by methyl groups.
Quaternary Ammonium Salt: The salt in which
there is a positively charged nitrogen attached to four alkyl groups is
called a quaternary ammonium salt.