Displaying 2 results of Acetylsalicylic Acid Impurities Acetylsalicylic acid (ASA) is a widely used pain reliever and anti-inflammatory medication. However, the production and storage of ASA can lead to the formation of impurities, which can affect the quality and efficacy of the drug. The impurities may include salicylic acid, acetic acid, and other related compounds, which can cause adverse effects such as stomach irritation, allergic reactions, and reduced effectiveness. Therefore, it is important to monitor and control the levels of impurities in ASA.