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Product Details

Entropy High Bio-Based Fast Hardener (ONF) is the required fast cure rate catalyst for Entropy High Bio-Based Laminating Epoxy Resin (ONE).

As the industry's First USDA BioPreferred Certified liquid epoxy resin product, the High Bio-Based Epoxy system delivers it all: a high bio-renewable content, green epoxy resin with fast room temperature cures and low sensitizing ingredients for increased user safety.

Its relatively low viscosity and great adhesion to all substrates makes it an excellent composite laminating resin and it features air release additives that allow for smooth brush-on coatings. This is the eco resin of choice for consumers.

Requires corresponding sized High Bio-Based Laminating Epoxy Resin (ONE) for use (2:1 mix ratio). See chart below.

Tech Specs
High Bio-Based Resin (ONE)/Fast Hardener (ONF) Admixed Specifications & Mechanical Data
Color Slight amber color
Mix Ratio by Volume 2:1 (resin:hardener)
Mix Ratio by Weight 100:43 (resin:hardener)
Mixed Viscosity @ 77°F 500 cPs
Pot Life @ 77°F 18 minutes
Tack Free Time @ 95°F 3 hours
Ideal Working Temperature Range Optimal - 70-85°F; Extended - 60-95°F
Ideal Working Humidity Range Optimal - 0-60%; Extended - 0-90%
Recommended Full Cure 7 days @ 77°F
Tensile Strength 7,720 psi
Elongation 6%
Flexural Strength 11,910 psi
Compression Strength 11,300 psi
Tg Ultimate 186°F
Hardness, Shore D 70-80
High Bio-Based Epoxy Resin (ONE) Quantity High Bio-Based Fast Hardener (ONF) Quantity Mixed Quantity
16 oz resin8 oz. hardener24 oz.
1/2 gallon resin1 qt. hardener3 qt.
1 gallon resin1/2 gallon hardener1.5 gallons
2 gallons resin1 gallon hardener3 gallons
4 gallons resin2 gallons hardener6 gallons
5 gallons resin2.5 gallons hardener7.5 gallons
Info & Guides

NOTE: Exact fill weight of 5 Gallon ONF Hardener is 4.759 gallons.

Technical Information

Entropy High Bio-Based Fast Hardener (ONF) Features

  • Provides lower viscosity and faster cure speed
  • First USDA BioPreferred Certified liquid epoxy resin System
  • Increased user safety
  • Green epoxy resin with fast room temperature cure
  • Excellent composite laminating resin
  • Features air release additives for smooth, brush-on coatings
  • Relatively low viscosity
  • Great adhesion to all substrates

Safety and Handling Information

Despite the natural derivation of Entropy resin products, exposure to these materials represents hazards typical of all epoxy resins. Exposure should be minimized and avoided through the use of proper personal protective clothing & equipment, and appropriate manufacturing controls. All persons who use, store, or transport these materials should understand proper handling precautions and recommendations, as stated in the SDS (safety data sheets).