Pyrrolidone Series
High-Quality Pyrrolidone Series for Industrial Applications
The Pyrrolidone Series represents a group of versatile chemical compounds widely used in pharmaceuticals, electronics, and industrial applications. These nitrogen-containing heterocyclic compounds exhibit excellent solvency, high thermal stability, and strong polarity.
Key Product Parameters
- Chemical Name: Pyrrolidone derivatives (NMP, 2-Pyrrolidone, etc.)
- Appearance: Colorless to pale yellow liquid
- Purity: ≥99.5% (GC)
- Molecular Weight: Varies by specific compound (85.11-113.16 g/mol)
- Boiling Point: 202-245°C (depending on derivative)
- Flash Point: 91-96°C
- Density: 1.028-1.120 g/cm³ at 25°C
- Viscosity: 1.4-10.0 cP at 25°C
- Refractive Index: 1.470-1.530 at 20°C
- Solubility: Miscible with water and most organic solvents
Technical Specifications Table
| Parameter | N-Methyl-2-Pyrrolidone (NMP) | 2-Pyrrolidone | N-Vinyl-2-Pyrrolidone (NVP) |
|---|---|---|---|
| CAS Number | 872-50-4 | 616-45-5 | 88-12-0 |
| Molecular Formula | C5H9NO | C4H7NO | C6H9NO |
| Boiling Point (°C) | 202 | 245 | 210 |
| Flash Point (°C) | 96 | 129 | 95 |
| Vapor Pressure (mmHg at 25°C) | 0.29 | 0.01 | 0.35 |
| Applications | Lithium battery production, petrochemical processing | Pharmaceutical synthesis, cosmetic formulations | Polymer production, medical applications |
Pyrrolidone Series Application Areas
- Pharmaceutical intermediates and drug synthesis
- Electronics manufacturing (especially semiconductor and lithium batteries)
- Industrial cleaning and degreasing applications
- Polymer and resin production
- Agricultural chemical formulations
- Paints and coating formulations
- Cosmetic and personal care products
Pyrrolidone Series FAQ Section
What are the main safety considerations when handling Pyrrolidone Series chemicals?
Pyrrolidone Series compounds should be handled with proper personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing. These chemicals may cause eye and skin irritation upon contact. Adequate ventilation is required when handling these compounds to prevent inhalation of vapors. Storage should be in tightly closed containers in cool, dry, well-ventilated areas away from heat sources and oxidizing agents. In case of large spills, contain the material and contact professional hazardous material handlers.
How does the Pyrrolidone Series compare to other polar aprotic solvents?
The Pyrrolidone Series offers several advantages over other polar aprotic solvents like DMF or DMSO. Pyrrolidone derivatives typically have lower toxicity profiles, better thermal stability, and more favorable environmental characteristics. They exhibit excellent solvency power for a wide range of organic and inorganic compounds while maintaining high boiling points and low vapor pressures. Additionally, Pyrrolidone Series compounds often show better selectivity in chemical reactions and improved compatibility with various materials in industrial applications.
What factors affect the shelf life of Pyrrolidone Series products?
The shelf life of Pyrrolidone Series products depends on several factors: proper storage conditions (recommended at temperatures below 30°C in sealed containers protected from light), exposure to moisture (most derivatives are hygroscopic), and potential contamination. Under optimal conditions, most Pyrrolidone Series compounds maintain stability for at least 24 months from production date. However, products should be periodically checked for discoloration or changes in physical properties. Some derivatives may require nitrogen blanketing for long-term storage to prevent oxidation.
Quality Assurance
Our Pyrrolidone Series products undergo rigorous quality control processes including:
- GC analysis for purity verification
- Moisture content testing (Karl Fischer method)
- Color assessment (APHA scale)
- Heavy metal content analysis
- Residual solvent screening
- Batch-to-batch consistency verification
Packaging Options
| Package Type | Capacity | Material | Special Features |
|---|---|---|---|
| Drum | 200 kg | Plastic (HDPE) | UN-certified, moisture barrier |
| Intermediate Bulk Container (IBC) | 1000 kg | Stainless steel | Pressure relief valve, grounding connection |
| Tanker truck | 20,000 kg | Stainless steel | Temperature controlled, dedicated service |
Regulatory Compliance
All Pyrrolidone Series products meet international regulatory standards including:
- REACH registration compliant
- FDA approval for specific grades (21 CFR 175.300)
- EPA compliance
- ISO 9001:2015 certified manufacturing
- GHS compliant labeling
- RoHS directive compliant