Glycols 1, 2 diols (vicinal diols)are called glycols Common names for glycols use the name of the alkene from which they were made CH, CH2 CH2CH2 CH3 OHOH OH OH 1.2-ethanediol 1, 2-propanediol ethylene glycol propylene glycol Chapter 10 12Chapter 10 12 Glycols • 1, 2 diols (vicinal diols) are called glycols. • Common names for glycols use the name of the alkene from which they were made. CH2 CH2 OH OH CH2 CH2 CH3 OH OH 1,2-ethanediol ethylene glycol 1,2-propanediol propylene glycol =>