N-(3-Aminopropyl)imidazole CAS 5036-48-6

N-(3-Aminopropyl)imidazole – Selective Catalyst for Epoxy and Urethane Systems

Basic Information

• Product Name: N-(3-Aminopropyl)imidazole

• CAS Number: 5036-48-6

• Molecular Formula: C₆H₁₁N₃

• Molecular Weight: 125.17 g/mol

• EC Number: 225-730-9

• Appearance: Colorless to light yellow liquid

• Odor: Amine-like

• Solubility: Miscible with water in all proportions

Overview
N-(3-Aminopropyl)imidazole is a bifunctional compound containing both an imidazole ring and a primary amine group. This unique structure imparts high reactivity and selectivity, making it an efficient catalyst for epoxy resin curing and polyurethane formation. It is widely used in the production of adhesives, coatings, composites, and electronic encapsulants.

Key Properties

• Selective catalytic activity – promotes epoxy homopolymerization and urethane reactions without side reactions.

• Good solubility – miscible with water and most organic solvents.

• Low volatility – suitable for high‑temperature processing.

• Enhances mechanical and thermal properties of cured resins.

• Acts as a latent curing agent when formulated properly.

Applications

• Epoxy resin systems: Used as a curing catalyst and modifier to accelerate crosslinking and improve heat resistance, chemical resistance, and adhesion.

• Polyurethane production: Catalyzes the reaction between isocyanates and hydroxyl groups, allowing controlled gelation and foam formation.

• Coatings and adhesives: Improves cure speed and final properties of epoxy and urethane‑based formulations.

• Composites and electronics: Employed in potting compounds, encapsulants, and structural adhesives where high performance is required.

Recommended Usage
Typical concentration ranges from 0.5% to 5% by weight of the resin system, depending on the desired cure rate and final properties. Optimization through formulation testing is recommended.

Handling and Storage

• Store in a cool, dry, well‑ventilated area, away from strong oxidizers, acids, and moisture.

• Keep containers tightly sealed to prevent contamination and absorption of moisture.

• Use appropriate personal protective equipment (gloves, safety goggles, protective clothing) when handling.

• Avoid skin contact and inhalation of vapors; wash thoroughly after handling.

Packaging
Available in 1 L, 5 L, 20 L, and 200 L drums, or custom packaging upon request.

Quality Assurance
Each batch is tested for purity (by GC), color, water content, and amine value to ensure consistent performance.