Displaying 1 results of Butylhydroxyanisole Impurities Butylhydroxyanisole (BHA) is a common food preservative used to prevent spoilage and extend shelf life. However, BHA impurities may be present in certain products due to manufacturing or storage conditions. These impurities can include carcinogenic compounds such as polycyclic aromatic hydrocarbons (PAHs) and heavy metals like lead and arsenic. It is important to monitor BHA levels in food products to ensure consumer safety.