D.E.R.™ 331

D.E.R.™ 331™ Liquid Epoxy Resin is a liquid reaction product of epichlorohydrin and bisphenol A that is the most widely used general purpose liquid epoxy resin. This product can be effectively cured at ambient temperatures with a wide variety of curing agents.

Used in:

  • Adhesives
  • Casting and Tooling
  • Civil Engineering
  • Composites
  • Automotive Coatings
  • Can and Coil Coatings
  • Marine and Protective Coatings
  • Photocure Industrial Coatings
  • Potting and Encapsulation


  • Recognized as the standard for liquid epoxy resins
  • Wide variety of curing agents available to cure at ambient conditions
  • Curing may also be done at an elevated temperature

Typical Physical Properties
These properties are typical but do not constitute specifications.

Epoxide Equivalent Weight (g/eq)182-192ASTM D-1652
Epoxide Percentage (%)22.4-23.6ASTM D-1652
Epoxide Group Content (mmol/kg)5200-5500ASTM D-1652
Color (Platinum Cobalt)75 Max.ASTM D-1209
Viscosity @ 25°C (mPa•s)11000-14000ASTM D-445
Hydrolyzable Chloride Content (ppm)500 Max.ASTM D-1726
Water Content (ppm)700 Max.ASTM E-203
Density @ 25°C (g/ml)1.16ASTM D-4052
Epichlorohydrin Content (ppm)5 Max.DowM 10131
Shelf Life (Months)24
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