Quaternary ammonium compounds have been widely used as disinfectants for decades. But some scientists think we need more data on their safety in people

Cover image:In the last decade, scientists have reported possible toxicity concerns with quaternary ammonium compounds. Do we need to know more about their safety as we arm ourselves with disinfectants containing them during the COVID-19 pandemic?

Credit: Yang H. Ku/C&EN/Shutterstock