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On February 1, 2022, Hexion Holdings Corporation announced that it has completed the sale of its Coatings and Composite businesses, which includes the epoxy specialty resins and base epoxy resins and intermediates product lines, to Westlake Chemical Corporation. For epoxy coatings and composite product inquiries, please contact customer service at or

EPON™ Resin SU-2.5


EPON™ Resin SU-2.5 is one of a family of epoxy resins based on a high aromatic content, polyfunctional structure. The principal difference between resins within the EPON Resin SU series is functionality and viscosity. EPON SU-2.5 offers the lowest viscosity and easiest working characteristics while contributing a higher functionality than is available from the standard bisphenol-based liquid EPON Resin 828.


  • Low viscosity
  • High functionality

Sales Specification

Property Standard Value Unit Test Method
Color 6 max. Gardner ASTM D1544
Epoxide Equivalent Weight 180 - 200 g/eq ASTM D1652
Viscosity at 52°C 20 - 60 P ASTM D2196

1 Reduced to 60 percent nonvolatiles in 2-(2-butoxyethoxy) ethanol.

Typical Properties

Property Standard Value Unit Test Method
Density at 25°C 9.8 lb/gal ASTM D1475
Flash Point >93 °C ASTM D93

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