DOW DER331 represents Dow Chemical's benchmark bisphenol-A liquid epoxy resin, serving as the foundation for numerous epoxy formulations. This versatile, undiluted low-molecular-weight resin delivers balanced performance across diverse curing systems, offering reliable thermal stability up to 204°C. Its standardized formulation ensures consistent quality for critical industrial applications.
Ultra-high purity - Exceptional chemical consistency and reliability
Low viscosity profile - Excellent flow and penetration characteristics
Optical clarity - Near-colorless for sensitive applications
Thermal performance - Enhanced high-temperature resistance
Processing efficiency - Easy handling and rapid wet-out
Filament winding - Precision composite structures
Electrical laminates - High-performance insulating materials
Electronic encapsulation - Sensitive component protection
Optical applications - Clear coating formulations
Aerospace composites - Critical structural components
| Epoxy Equivalent Weight | g/eq | 172-176 |
| Viscosity at 25°C | cP | 4,000-6,000 |
| Color (APHA) | - | ≤75 |
| Density at 25°C | g/cm³ | 1.16-1.18 |
| Flash Point | °C | >200 |
| Hydrolyzable Chloride | ppm | ≤300 |
| Weight per Gallon | lb/gal | 9.7-9.9 |
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