Displaying 4 results of Abietic Acid Impurities Abietic acid is a natural resin acid that is commonly found in pine trees. However, during the manufacturing process of abietic acid, impurities may be introduced. These impurities can include by-products such as dehydroabietic acid, neoabietic acid, and others. These impurities can affect the purity and quality of the abietic acid, and may need to be removed through various purification methods.