Copyright © 2004 Pearson Education Inc., publishing as Benjamin Cummings Amines 17.2 Naming Amines 17.3 Physical Properties of Amines Chapter ppt download: Copyright © 2004 Pearson Education Inc., publishing as Benjamin Cummings. 3 Classification of Amines Amines are classified as primary, secondary, or tertiary. In a primary (1°) amine, one carbon group is bonded to the nitrogen atom. A secondary (2°) amine has two carbon groups. A tertiary (3°) amine has three carbon groups. H CH 3 CH 3 | | | CH 3 —N—H CH 3 —N—H CH 3 —N—CH 3 1° 2° 3°