Classification Primary:carbon with -OH is bonded to one other carbon. Secondary:carbon with -OH is bonded to two other carbons. Tertiary:carbon with-OH is bonded to three other carbons. Aromatic (phenol):-OH is bonded to a benzene ring. => Chapter 10 3Chapter 10 3 Classification • Primary: carbon with –OH is bonded to one other carbon. • Secondary: carbon with –OH is bonded to two other carbons. • Tertiary: carbon with –OH is bonded to three other carbons. • Aromatic (phenol): -OH is bonded to a benzene ring. =>