It is used as a cosolvent and plasticiser in aqueous coatings. As a setting agent, it is used for acrylic emulsions and acrylic/styrene copolymers in floor polishes.
2-Pyrrolidone is used as a co-solvent for water-based ink formulations
It is an organic synthesis intermediate in the pharmaceutical industry, e.g. Piracetam; and as a solvent for animal injection
2-Pyrrolidone is a precursor of N-vinylpyrrolidone (NVP). It also finds application as a solvent in the manufacture of membrane filters for e.g. sterile filtration of drugs such as pharmaceutical proteins, wine filtration systems.