Effect of Phase on Adipic Acid Reactivity (image) Harvard University Caption This diagram illustrates the effect of phase on the chemical reactivity of adipic acid, a type of secondary organic material that is common in the atmosphere. Credit Courtesy of Kuwata Mikinori and PNAS. Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.