Polyurethane Catalyst QHA-H8 (DMCHA) Product Data Sheet

Product Name: QHA-H8 | Chemical Name: N,N-Dimethylcyclohexylamine | CAS No.: 98-94-2

Product Category: Tertiary Amine Polyurethane Catalyst | Molecular Formula: C₈H₁₇N

1. Description

QHA-H8 is a high-purity tertiary amine catalyst, primarily composed of N,N-Dimethylcyclohexylamine, specifically engineered for polyurethane (PU) foam manufacturing and related organic synthesis applications. It is a low-viscosity, medium-activity catalyst with excellent catalytic performance, balancing the gelation reaction (polyol-isocyanate crosslinking) and blowing reaction (isocyanate-water interaction) in PU systems, ensuring stable foam rise and uniform cell structure.

This product features high purity, good chemical stability, and excellent compatibility with mainstream PU raw materials, including polyether polyols, polyester polyols, and isocyanates. It acts as a strong initial catalyst for foam reactions, effectively accelerating the curing process while maintaining process adjustability and long-term storage stability. In addition to its core application in PU foams, QHA-H8  also serves as a versatile intermediate in organic synthesis, epoxy resin curing acceleration, and rubber vulcanization promotion.

2. Specification

The table below lists the typical physical and chemical properties of Polyurethane Catalyst QHA-H8, complying with industrial quality standards and strict quality control requirements:

3. Application

Catalyst QHA-H8 is a versatile catalyst with broad applicability, mainly focused on polyurethane rigid foam production and other industrial fields:

• Rigid Polyurethane 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. It optimizes cell structure, enhances thermal insulation performance, and improves mechanical strength of the foam.
• Flexible & Semi-Rigid PU Foams: Used as an auxiliary foaming agent in molded flexible foams (automotive seats, furniture cushions) and semi-rigid foams, adjusting reaction kinetics and improving product flexibility and dimensional stability.
• Organic Synthesis: Serves as an intermediate in the synthesis of pesticides, dyes, and pharmaceuticals, acting as an acid-base neutralizer to improve reaction selectivity.
• Epoxy Resins & Coatings: Functions as an epoxy resin curing accelerator, compatible with polyurethane and epoxy coatings, shortening curing time and enhancing film adhesion, hardness, and chemical resistance.
• Other Fields: Used as a rubber accelerator to promote vulcanization, a water treatment corrosion inhibitor, and a fuel oil stabilizer to prevent sludge formation.
• It can be used alone as the main catalyst or blended with other amine catalysts to fine-tune reaction rates and meet specific formulation requirements. The recommended dosage is 0.3–1.5% based on the weight of polyol in PU foam formulations.

4. Storage & Handling

Storage Conditions

• Store in sealed original steel drums (170kg/drum or 200L/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.
• Keep the product isolated from strong acids, oxidizing agents, and moisture to prevent chemical reactions, performance degradation, or contamination. Avoid prolonged exposure to high temperatures to prevent volatilization and oxidation.
• Storage areas must be equipped with spill containment facilities, anti-static equipment, and emergency response materials (such as diatomaceous earth for adsorption and dilute hydrochloric acid for neutralization) to handle potential leaks.
• Comply with local chemical safety and environmental regulations for storage and transportation, and label the product with appropriate hazardous chemical markers.

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.
• Wear full personal protective equipment (PPE) during handling, including chemical-resistant gloves, safety goggles, a protective coat, and anti-static shoes. For high-concentration operations, use an air-purifying respirator to avoid respiratory exposure. OSHA specifies an air exposure limit of 10 ppm (time-weighted average) for DMCHA.
• 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, contain the spill with adsorption materials, neutralize if necessary, and dispose of waste in accordance with local hazardous waste regulations.
• Dispose of waste liquid, cleaning residues, and empty containers properly: neutralize waste liquid before sending to a professional hazardous waste treatment agency; adsorb cleaning residues with activated carbon before incineration; clean empty drums thoroughly before disposal as hazardous waste.

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.