Pyridinium Chlorochromate (PCC) Pyridinium chlorochromate (PCC). CrO,C1 CrO3'pyridine·HCI or pyH+CrOCI- Copyright010Pearson Prne Hall Inc PCC is a complex of chromium trioxide, pyridine,and HCI. Oxidizes primary alcohols to aldehydes. Oxidizes secondary alcohols to ketones. Chapter 11 9Chapter 11 9 Pyridinium Chlorochromate (PCC) • PCC is a complex of chromium trioxide, pyridine, and HCl. • Oxidizes primary alcohols to aldehydes. • Oxidizes secondary alcohols to ketones