Polyurethane Catalyst QHA-BDMA Product Data Sheet

Product Names: QHA-BDMA | Chemical Name: N,N-Dimethylbenzylamine | CAS No.: 103-83-3

Product Category: Tertiary Amine Polyurethane Catalyst | Molecular Formula: C₉H₁₃N | Molecular Weight: 135.21

EC Number: 203-149-1 | UN Number: 2619 8/PG 2

1. Description

QHA-BDMA are high-purity, medium-activity tertiary amine catalysts, with N,N-Dimethylbenzylamine  as the core active component, specially designed for polyurethane (PU) foam manufacturing and a wide range of industrial applications. They are colorless to pale yellow clear liquids with a characteristic amine odor, featuring strong catalytic selectivity and excellent chemical stability.

These catalysts primarily accelerate the gelation reaction (polyol-isocyanate crosslinking) in PU systems, while providing moderate promotion for the blowing reaction (isocyanate-water interaction), effectively balancing reaction kinetics to ensure stable foam rise, uniform cell structure, and good adhesion between the foam and substrate. They exhibit superior compatibility with mainstream PU raw materials, including polyether polyols, polyester polyols, isocyanates, and other auxiliary additives. Beyond polyurethane applications,  QHA-BDMA also serve as versatile intermediates in organic synthesis, epoxy resin curing accelerators, corrosion inhibitors, and acid neutralizers.

2. Specification

The table below lists the typical physical and chemical properties of  QHA-BDMA, complying with industrial quality standards and strict quality control requirements, ensuring consistent product performance across batches:

3. Application

QHA-BDMA are versatile, high-performance tertiary amine catalysts with broad applicability, mainly focused on polyurethane foam production and other industrial fields, with core advantages in optimizing foam structure and enhancing adhesion:

• Polyurethane Rigid Foams: The core application, widely used in insulation foam formulations such as building exterior insulation panels, on-site spray foam insulation, refrigeration equipment (refrigerators, freezers) insulation layers, refrigerated truck insulation, and insulation plates/laminates. They provide good early fluidity, uniform cells, and strong adhesion between the foam and substrate.
• Polyurethane Flexible & Semi-Rigid Foams: Used as an auxiliary catalyst in polyester-based polyurethane slabstock soft foams, molded flexible foams (automotive seats, furniture cushions), and semi-rigid foams, adjusting reaction kinetics to improve product flexibility, resilience, and dimensional stability.
• PU Adhesives & Coatings: Applied in polyurethane adhesives, sealants, and coatings (CASE field), accelerating curing speed, enhancing bond strength, and improving film performance.
• Epoxy Resins: Serve as curing accelerators for epoxy resin systems (acid anhydride, polyamide, fatty amine curing systems), widely used in epoxy electronic potting materials, encapsulating materials, epoxy floor coatings, and marine paints to shorten curing time.
• Organic Synthesis & Other Fields: Used as catalysts for dehydrohalogenation in organic drug synthesis, acid neutralizers, corrosion inhibitors, and intermediates for quaternary ammonium salt synthesis. They are also used to produce cationic surfactants and powerful fungicides.
• They can be used alone as the main catalyst or blended with other amine catalysts (such as DMCHA, TEDA) to fine-tune reaction rates. The recommended dosage is 0.2–1.2% based on the weight of polyol in PU foam formulations, depending on the specific foam type and performance requirements.

4. Storage & Handling

Storage Conditions

• Store in sealed original containers (25kg/drum, 180kg/drum, 200kg/drum or IBC drum) in a cool, dry, well-ventilated warehouse, away from direct sunlight, heat sources, open flames, and static electricity. The recommended storage temperature is 5–30°C; avoid prolonged exposure to high temperatures to prevent volatilization and oxidation.
• Keep the product isolated from strong acids, oxidizing agents, and moisture to prevent chemical reactions, performance degradation, or contamination. For long-term storage, containers can be filled with nitrogen to avoid oxidation.
• Storage areas must be equipped with spill containment facilities and emergency response materials (adsorption materials, neutralizers such as acetic acid) to handle potential leaks, and comply with local chemical safety and environmental regulations. The product is classified as a corrosive and flammable liquid, so fire prevention and corrosion protection measures should be strictly implemented.

Shelf Life & Handling Precautions

• Unopened shelf life: 12 months under recommended storage conditions. Conduct performance testing prior to use if expired. Once opened, use the product within 3 months and reseal tightly after each use to prevent moisture absorption and volatilization.
• Wear appropriate personal protective equipment (PPE) during handling, including chemical-resistant gloves, safety goggles, a protective coat, and anti-static shoes. Operate in a well-ventilated area or fume hood to avoid inhalation of vapors; use an air-purifying respirator for high-concentration operations. The product is corrosive and irritating to skin, eyes, and respiratory tract.
• In case of accidental contact: Flush skin or eyes with plenty of clean water for at least 15 minutes; seek medical attention promptly if irritation persists. In case of leakage, evacuate personnel, cut off fire sources, cover the spill with adsorption materials (such as diatomaceous earth or sand), neutralize with dilute acid if necessary, and dispose of waste in accordance with local hazardous waste regulations.
• Dispose of empty containers and waste liquid properly: clean empty containers thoroughly before disposal, and send waste liquid to a professional hazardous waste treatment agency to avoid environmental pollution. Do not pour directly into water bodies or sewers.

The information provided is based on current technical knowledge and practical application experience. Shijiazhuang Qihong  New Material Technology Co.,Ltd assumes no liability for losses caused by improper storage, handling, or application of the product. Users are recommended to conduct preliminary formulation tests to verify the product’s suitability for specific production processes and comply with all relevant safety regulations. Reference safety data sheet (SDS) for detailed hazard information.