Yes - polyvinyl alcohol is resistant to nearly all organic solvents, other organic liquids and mineral oils. Therefore, compatibility testing should always be performed. Although water is the best solvent for polyvinyl alcohol, PVOH film can be used to package liquid formulations having a low water content - a few percent is optimal and often beneficial to the maintenance of film flexibility. When film dissolves, it breaks down to its smallest components, which are invisible polymer chains. Microorganisms in waste water streams feed on these large molecules and break them down to carbon dioxide and water.
PVOH polymer is thus completely biodegradable.