Overview
2-Pyrrolidone (CAS 616-45-5 ) is a cyclic lactam used across industrial and specialty chemical markets as a solvent, monomer, and functional additive. It serves as a direct precursor to polyvinylpyrrolidone and as an intermediate in the synthesis of other N-substituted pyrrolidones.
Buyers source it primarily for polymer production, ink formulation, and personal care applications. In inkjet and printing ink systems, it functions as a co-solvent and humectant that controls drying rate and prevents nozzle clogging in aqueous formulations.
It acts as a key monomer and building block in the manufacture of PVP and related polymers used in pharmaceutical binders, adhesives, and coatings. Personal care formulators incorporate it as a humectant and penetration enhancer in skin and hair care products.
In electronics manufacturing, it is used as a processing solvent for polymer films and specialty coatings where low residue and compatibility with sensitive substrates matter. This versatility makes it a staple in high-performance chemical manufacturing.
2-Pyrrolidone is supplied as a colorless to pale yellow liquid in drum and IBC quantities. Technical grade and high-purity grades are the standard commercial offerings, with pharmaceutical-grade material available to meet USP and Ph. Eur. specifications.
Packaging options typically range from small containers for specialty applications to bulk tanker supply for polymer production. Reliable logistics ensure that the product maintains its chemical integrity during transport and storage for industrial use.
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Physical Properties
| Melting Point | 25.0 °C |
| Boiling Point | 76 °C @ Press: 0.2 Torr |
| Density | 1.116 g/cm³ @ Temp: 25 °C |
| Flash Point | >230 °F |
| Appearance | Clear colorless to pale yellow liquid or |
| Color | Clear colorless to pale yellow |
| Form | Liquid or Low Melting Mass |
| Water Solubility | miscible |
| Vapor Pressure | 0.04 hPa (20 °C) |
| Refractive Index | n 20/D 1.487(lit.) |
| pH | 9-11 (100g/l, H2O, 20℃) |
| Log P | -0.71 at 20℃ |
Safety & Handling
Danger GHS05 GHS07 GHS08 Hazard Statements H315 Causes skin irritation H318 Causes serious eye damage H319 Causes serious eye irritation H335 May cause respiratory irritation H360 May damage fertility or the unborn child Precautionary Statements P203 Obtain, consult and follow expert instructions for use. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P271 Use only outdoors or in a well-ventilated area. P280 Wear protective gloves/protective clothing/eye protection/face protection. P317 Get emergency medical help. P318 IF exposed or concerned, get medical advice. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P332+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P305+P354+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Trade & Regulatory
| HS Code | 29339980 |
| Storage Class | 6.1C - Combustible acute toxic Cat.3 toxic compounds or compounds which causing chronic effects |
| WGK (Germany) | 1 |
Other Names
Related Products
Chemical Properties
- CAS Number
- 616-45-5
- EC Number
- 210-483-1
- Mol. Weight
- 85.10
- HS Code
- 29339980
- Category
- Pigments & Colorants