EVOH is a copolymer of ethylene and vinyl alcohol. EVOH is best known for being an outstanding barrier to gases such as oxygen, carbon dioxide and nitrogen. EVOH is therefore the right choice for many food-packaging applications, capable of maintaining a modified atmosphere as well as preventing oxidation. It is highly resistant to hydrocarbons and organic solvents. This makes it a good choice for packaging oily foods, edible oils, pesticides and organic solvents. It is also a good aroma barrier.