Pyrrolidone (2-Pyrrolidone)
2-Pyrol, alpha-Pyrrolidone, Butyrolactam.
- CAS
- 616-45-5
- EC
- 210-483-1
- Sectors
- Printing & Packaging, Plastics & Polymers, Pharma & Healthcare
Pyrrolidone (2-Pyrrolidone), CAS 616-45-5, is a high-boiling polar lactam that appears as a clear colorless to pale yellow liquid or low melting mass, and serves as a solvent and chemical intermediate in inkjet inks, polymer production and pharmaceutical synthesis. Available in 99.5% min purity, it provides a high-boiling, polar environment for complex chemical reactions and formulations.
This colorless liquid (which crystallizes at cool temperatures) is highly effective as a solvent in inkjet ink formulations and digital printing. It serves as a vital building block for the synthesis of various polymers, including Polyvinyl Pyrrolidone (PVP).
In the automotive and industrial sectors, 2-Pyrrolidone is utilized in the production of specialized synthetic resins and plasticizers. Its excellent solvency for high-molecular-weight polymers makes it a key component in precision manufacturing.
Typical Properties
| Molecular formula | C4H7NO |
|---|---|
| Molecular weight | 85.1 g/mol |
| Appearance | Clear colorless to pale yellow liquid or |
| Form | Liquid or Low Melting Mass |
| Color | Clear colorless to pale yellow |
| Melting point | 25.0 °C |
| Boiling point | 76 °C @ Press: 0.2 Torr |
| Density | 1.116 g/cm³ @ Temp: 25 °C |
| Water solubility | miscible |
| Flash point | >230 °F |
| pH | 9-11 (100g/l, H2O, 20°C) |
| GHS signal word | Danger · Corrosive, Irritant / harmful, Health hazard |
| HS code | 29339980 |
| Grades available | Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Pyrrolidone (2-Pyrrolidone)
Applications
- Inkjet Inks: Acts as a co-solvent and humectant in water-based digital and industrial printing inks.
- Pharma Intermediate: Used in the synthesis of several drugs, including nootropics and antibiotics.
- Polymer Production: Functions as a monomeric precursor for the manufacture of nylon-4 and various specialty resins.
Safety & Risks
Classified as Eye Irritant 2 and Repr 1B. Potential developmental hazard. Wear Safety Goggles, Protective Aprons, and Nitrile Gloves.
Packaging
200 kg Steel Drums or 1000 kg IBC Tanks.