Vinyl Pyrrolidone, N-Vinylpyrrolidone, Vinyl Pyrrolidinone, VP, NVP, 88-12-0

Vinyl Pyrrolidone, N-Vinylpyrrolidone, Vinyl Pyrrolidinone, VP, NVP, 88-12-0

1-Vinyl-2-pyrrolidone (CAS 88-12-0) in English, formatted to match your preferred style:

🌟 1-Vinyl-2-pyrrolidone (VP)

A) Physical and Chemical Properties

• Chemical Formula: C₆H₉NO

• Molecular Weight: 111.14 g/mol

• Appearance: Clear to pale yellow liquid

• Melting Point: 13–14 °C

• Boiling Point: ~92–95 °C @ 11 mmHg

• Density: ~1.04 g/cm³ (20–25 °C)

• Solubility: Fully miscible with water and most organic solvents

• pH (100 g/L in water): 9–10

• Flash Point: ~95 °C

• Explosion Limits: 1.4–10% (v/v)

• Vapor Pressure: ~0.12 hPa @ 20 °C

• Autoignition Temperature: ~240 °C

• Refractive Index: n₂₀/D 1.512

• WGK (Germany): 1 (low water hazard)

• EC No: 201-800-4

• HS Code: 2933.79.00

B) Applications

• Polymer Production: Key monomer for Polyvinylpyrrolidone (PVP) synthesis

• Coatings & Inks: Used in UV-curable systems and printing inks

• Pharmaceuticals: Carrier for nano-drug formulations

• Research Use: Photoinitiator & genotoxicity studies

C) Manufacturing Method

• Main Route: Vinylation of 2-pyrrolidone with acetylene gas

• Catalyst: Potassium hydroxide-based solution process

• Conditions: High pressure & temperature in batch or continuous reactors

• Purity: ≥99% (often stabilized with NaOH or phenylene diamine)

D) Chemical Reactions

• Free Radical Polymerization: For PVP and copolymers

• Vinyl Group Reactions: Crosslinking and surface modification

• N-Alkylation: For derivative synthesis

E) Alternatives

• N-Vinylcaprolactam (VCap): Lower toxicity monomer

• Acrylamide: Used in aqueous polymer systems

• Vinyl acetate: Lower-cost vinyl monomer

• 2-Pyrrolidone: Precursor for VP synthesis

F) Synonyms 1-Vinyl-2-pyrrolidone, N-Vinylpyrrolidone, VP, 1-Vinyl-2-pyrrolidinone

G) Common Names “PVP monomer” “Vinyl pyrrolidone” “UV-curable solvent”

H) Usage Ratios

• PVP Synthesis: 100% monomer base

• Coatings & Inks: 5–30% in formulation

• Pharmaceutical Systems: 1–10% carrier phase