Description

3-Methyl-2-Pyrrolidinone CAS NO 2555-05-7 is a high-purity, versatile heterocyclic amide solvent and chemical intermediate. It is valued for its excellent solvating power, high boiling point, and thermal stability, making it a superior alternative to other polar aprotic solvents. This compound is essential for manufacturers in the pharmaceutical, agrochemical, and specialty polymer industries seeking reliable performance in synthesis and formulation.

Application

• Pharmaceutical Synthesis: As a key solvent and reaction medium in the production of active pharmaceutical ingredients (APIs), particularly for peptide coupling and other condensation reactions.
• Agrochemical Formulation: Used as a co-solvent and stabilizer in the manufacture of pesticides, herbicides, and fungicides to enhance efficacy and solubility.
• Polymer & Resin Production: Serves as a processing solvent for high-performance polymers, including polyimides and polyamide-imides, and in the synthesis of specialty resins.
• Electronics & Li-ion Battery Manufacturing: Employed as a solvent for electrode binders (e.g., PVDF) and in the production of electrolytes due to its high dielectric constant and purity.
• Chemical Intermediate: Acts as a building block in organic synthesis for creating more complex N-methylated heterocyclic compounds and fine chemicals.
• Industrial Cleaning & Degreasing: An effective component in precision cleaning formulations for removing tough residues from metal and electronic parts.

Basic Information

Product Name	3-Methyl-2-Pyrrolidinone
CAS No.	2555-05-7
Molecular Formula	C5H9NO
Molecular Weight	99.13 g/mol
Synonyms	3-Methylpyrrolidin-2-one; N-Methyl-3-pyrrolidinone; 3-Methyl-2-pyrrolidone; 1-Methyl-3-pyrrolidinone; 3-Methyl-2-oxopyrrolidine; N-Methyl-3-butyrolactam; 3-Methylbutyrolactam; 3-Methyl-A4-butyrolactam
EINECS	219-861-6

Quality Control

Our 3-Methyl-2-Pyrrolidinone is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including chromatography and spectroscopy, to ensure it meets high-purity standards suitable for demanding applications. Certificates of Analysis (COA) with detailed specifications are provided for every shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. The container should be kept tightly sealed when not in use to prevent moisture absorption.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 99.0%
Water Content (KF)	≤ 0.1%
Refractive Index (n20D)	1.468 - 1.472
Density (20°C)	1.030 - 1.050 g/mL
Boiling Point	~ 202°C

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.