TETA Epoxy Hardener: High-Performance Curing Agent

TETA (Triethylenetetramine) is a versatile epoxy hardener and primary aliphatic amine curing agent widely used in epoxy resin systems. It is a medium-viscosity, slightly yellow, transparent liquid at room temperature with a strong ammonia-like odor. As a key curing agent, TETA enables rapid crosslinking of epoxy resins under ambient conditions, making it ideal for industrial and commercial applications.

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Description

TETA (Triethylenetetramine) is a versatile epoxy hardener and primary aliphatic amine curing agent widely used in epoxy resin systems. It is a medium-viscosity, slightly yellow, transparent liquid at room temperature with a strong ammonia-like odor. As a key curing agent, TETA enables rapid crosslinking of epoxy resins under ambient conditions, making it ideal for industrial and commercial applications.

Key Features & Benefits

  • Fast Curing at Room Temperature : Reacts rapidly with epoxy groups (e.g., in DGEBA prepolymer systems) to shorten curing time, reducing production cycles and enabling quicker demolding.
    • Primary curing agent for epoxy resins, producing durable, heat-resistant materials
    • Used to formulate modified curing agents and polyamide curing systems
    • Acts as a high-boiling-point solvent in epoxy formulationsVersatile Applications :
  • Thermal Stability : Enhances thermal properties in cured epoxy systems, such as glass transition temperature (Tg), as shown in molecular dynamics studies
  • Cost-Effective : Streamlines manufacturing processes by accelerating production timelines

Common Uses

  • Industrial Epoxy Systems : Ideal for coatings, adhesives, and composite materials requiring fast curing.
  • DGEBA-Based Epoxy Resins : Optimizes curing reactions in these common epoxy prepolymers, balancing reactivity and mechanical properties
  • Specialty Applications : Used in modified curing agents and polyamide production for tailored epoxy formulations

Safety & Handling

  • Odor : Strong ammonia-like scent; use in well-ventilated areas
  • Compatibility : Works with additives like imidazolium ionic liquids, though these may slightly reduce reactivity
  • Storage : Store in sealed containers to prevent moisture absorption.

Why Choose TETA?

  • Speed : Accelerates production cycles without sacrificing quality.
  • Reliability : Proven performance in epoxy systems for over 50 years.
  • Flexibility : Adaptable for a range of industrial and specialty applications.

TECHNICAL INFORMATION

Product Name

Triethylenetetramine (TETA)

Chemical Name

N’-[2-(2-aminoethylamino)ethyl]ethane-1,2-diamine

CAS Number

90640-67-8, 112-24-3 (L-TETA)

EINECS/ELINCS No.

203-950-6 (L-TETA)

Molecular Weight

146.24 (L-TETA)

Molecular Formula

C₆H₁₈N₄ (L-TETA)

Appearance

Clear liquid

Assay (tetramines)

≥ 96.0 Area%

Color

≤ 50 Hazen

Water Content

≤ 0.5 wt%

Form

Viscous liquid

Color

Light yellow

Odor

Ammonical

Explosive Properties

No

Flammability

Not classified as a flammability hazard

Oxidizing Properties

No

Water Solubility

Soluble

Solubility in Other Solvents

Acetone; Methanol

pH (100% solution)

13

Melting Point/Freezing Point

<-20 °C (at 1013 hPa)

Boiling Point/Range

274.6 °C (at 1013 hPa)

Flash Point

118 °C (closed cup, at 1013 hPa)

Vapor Pressure (20°C)

0.0035 hPa

Relative Vapor Density (air=1.0)

5.04

Density (25°C)

971 kg/m³

Relative Density (25°C)

0.971

Partition Coefficient (log Pow)

-2.65 (N-octanol/water, 20°C)

Dynamic Viscosity (40°C)

13.9-20 mPa·s

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