Polyurethane Catalyst QHA-DMAEE Product Data Sheet

Product Name: QHA-DMAEE | Chemical Name: N,N-Dimethylethanolamine (Isomer-Specific Grade) | CAS No.: 1704-62-7

Product Category: Hydroxyl-Containing Tertiary Amine Polyurethane Catalyst | Molecular Formula: C₄H₁₁NO |

EC Number: 216-941-6 | UN Number: 2051 8/PG 3

1. Description

Polyurethane Catalyst QHA-DMAEE, chemically known as N,N-Dimethylethanolamine (isomer-specific grade), is a high-performance, hydroxyl-functional tertiary amine catalyst with unique dual reactivity. It is a colorless to pale yellow transparent liquid with a mild ammoniacal odor, characterized by excellent catalytic activity, superior compatibility, and hydroxyl group reactivity, specifically engineered for polyurethane (PU) foam manufacturing, coatings, adhesives, and various industrial applications requiring precise catalytic control.

Distinguished by its specific CAS number 1704-62-7, this grade of QHA-DMAEE exhibits balanced catalytic effects on both the gelation reaction (polyol-isocyanate crosslinking) and blowing reaction (isocyanate-water interaction) in PU systems, effectively regulating reaction kinetics to ensure stable foam rise, uniform cell structure, and minimal processing defects. Its inherent hydroxyl group (-OH) can chemically react with isocyanates, integrating into the polyurethane molecular chain to reduce catalyst volatility, thereby lowering residual odor and improving the mechanical properties of the final product. It demonstrates excellent compatibility with mainstream PU raw materials, including polyether polyols, polyester polyols, isocyanates, foaming agents, and other auxiliary additives. With moderate catalytic activity and low volatility, it is widely applicable in various PU formulations, particularly suitable for products requiring low odor, high stability, and consistent performance.

2. Specification

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

3. Application

Polyurethane Catalyst QHA-DMAEE is a versatile, dual-functional catalyst with broad applicability, mainly focused on polyurethane foam production, coatings, and adhesives, with core advantages in balanced catalytic performance, low volatility, and hydroxyl reactivity:

• Rigid Polyurethane Foams: Widely used in insulation foam formulations such as building exterior insulation panels, on-site spray foam insulation, refrigeration equipment (refrigerators, freezers) insulation layers, and refrigerated truck insulation. It optimizes cell uniformity, enhances foam thermal insulation performance and mechanical strength, and reduces residual odor due to its low volatility and integrated hydroxyl reactivity.
• Flexible PU Foams: Used as a main or auxiliary catalyst in slabstock flexible foams (bedding, furniture) and molded flexible foams (automotive seats, cushions), adjusting reaction kinetics to improve product flexibility, resilience, and dimensional stability, and meeting strict low-odor requirements for indoor and automotive applications.
• PU Coatings & Adhesives: Applied in polyurethane coatings, varnishes, and adhesives, accelerating curing speed, enhancing film adhesion and mechanical properties, and improving the product’s resistance to water, oil, and chemicals. Its hydroxyl group enables better integration with the PU matrix, significantly enhancing coating durability and adhesive bond strength.
• Semi-Rigid & Microcellular Foams: Suitable for semi-rigid foams (automotive interior trim, sound insulation parts) and microcellular foams (shoe soles, gaskets), promoting fine cell structure and ensuring consistent foam density and surface smoothness, which is critical for high-precision applications.
• Other Applications: Used as a catalyst in epoxy resin curing, a solvent in organic synthesis, and an intermediate in the production of surfactants, pharmaceuticals, and dyes. It can also be used as a neutralizer and corrosion inhibitor in metal processing, leveraging its dual functional properties.
• It can be used alone as the main catalyst or blended with other amine catalysts (such as TEDA, DMCHA) to fine-tune reaction rates. The recommended dosage is 0.3–1.5% based on the weight of polyol in PU foam formulations, and 0.5–2.0% in PU coatings and adhesives, depending on the specific product type, raw material system, and performance requirements.

4. Storage & Handling

Storage Conditions

• Store in sealed original containers (180kg/drum, 25kg/drum or 20L/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 (above 40°C) to prevent volatilization, viscosity changes, and performance degradation.
• Keep the product isolated from strong acids, oxidizing agents, and moisture to prevent chemical reactions, performance degradation, or contamination. Avoid contact with strong oxidants to prevent combustion or explosion hazards, and do not mix with incompatible substances.
• Storage areas must be equipped with spill containment facilities and emergency response materials (adsorption materials, neutralizers such as dilute acetic acid) to handle potential leaks, and comply with local chemical safety and environmental regulations. The product is classified as a flammable and corrosive 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, volatilization, and contamination.
• 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, contain the spill with adsorption materials (such as diatomaceous earth), 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.