C8, also known as perfluorooctanoic acid (PFOA), is a synthetic chemical that belongs to a group of substances called perfluoroalkyl and polyfluoroalkyl substances (PFAS). It has been used in various industrial applications and consumer products, such as non-stick cookware, water-repellent fabrics, and food packaging. C8 is known for its resistance to heat, water, and oil. Due to its persistence in the environment and potential health risks, including links to certain cancers and liver damage, C8 has come under scrutiny. Many countries have implemented regulations to limit its use and reduce exposure, leading to a decline in its production and application in recent years.