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Dytek® DCH-99

Chemical Name: 1,2-Diaminocyclohexane
Function: Curing Agent, Corrosion Inhibitor, Chelating Agent, Chain Extender, Catalyst
CAS Number: 694-83-7
Chemical Family: Hydrocarbons, Diamines
Synonyms: 1,2-Cyclohexanediamine
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TypeDocument Name
Technical Data Sheet
Dytek® DCH-99 Technical Data Sheet
Dytek® DCH-99 Technical Data Sheet
Technical Data Sheet
Safety Data Sheet
Dytek® DCH-99 Information Sheet
Dytek® DCH-99 Information Sheet
Safety Data Sheet

Knowde Enhanced TDS

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Identification & Functionality

Dytek® DCH-99 Features & Benefits

Industrial Additives Features

Applications & Uses

Epoxy Curatives

Epoxy resins cured with Dytek® amines have excellent properties for use in coatings, civil engineering, adhesives, marine, and composite applications. 

Features Typical Applications
  • Low viscosity vs. IPDA
  • Chemical resistance
  • Highest Tg of all Dytek® Amines
  • Tank linings with chemical exposure
  • High temperature applications
  • Wind turbine blades
  • High-performance composite parts



Chelating Agent

  • Oilfield
  • Textiles
  • Water treatment
  • Detergents

Epoxy Curing Agents

  • Composites
  • Flooring/paving

Herbicide intermediates

Polyamide Resin

  • Adhesives
  • Coatings
  • Films
  • Plastics
  • Inks


  • Extenders
  • Catalysts

Scale/Corrosion Inhibitors


Physical Form
Clear and free of suspended materials
Amine like
Miscible In
Typical Properties
ValueUnitsTest Method / Conditions
1,2-Diaminocyclohexane Content99wt%-
2-Methylpentamethylenediamine Content0.1wt%-
Amine Value967mgKOH/g-
Critical Pressure (Pc)43.4atm-
Critical Temperature (Tc)409.2°C-
Critical Vapourization (Vc)361.5mL-
Flash Point75 (167)°C (°F)Closed Cup
Hansen Solubility Parameters (δ)11--
Hansen Solubility Parameters (δd)8.6--
Hansen Solubility Parameters (δH)5.8--
Hansen Solubility Parameters (δp)3.5--
Heat of Vaporization (at 185°C)106cal/g-
Hexamethylenediamine Content0.1wt%-
Hydrogen Equivalent Weight28.5--
Melting Point (Cis)2 (36)°C (°F)-
Melting Point (Trans)15 (59)°C (°F)-
Molecular Weight114--
pH (5% Aqueous Solution)12--
pKa1 (at 30°C (86°F))9.6--
pKa2 (at 30°C (86°F))6.1--
Refractive Index (cis, n25 D)1.487--
Specific Gravity (at 20°C (68°F))0.94--
Viscosity (at 21°C (70°F))7.2cP-
Volatiles Content100%-
Water Content0.1wt%-
Tg, (DSC, 2nd run)176°C-
Izod Impact Strength Unnotched5.9ft-lbf/in2-
Charpy Impact Strength4.8ft-lbf/in2-
Flexural Strength (X 103)12.8psi-
Elasticity Modulus (X 103)439psi-
Tensile Strength (X 103)4.4psi-
Elongation at Break2.4%-
Vapor Pressure (at 20°C)0.387mm Hg-
Hardness86Shore D-

Technical Details & Test Data

Aspartic Esters

INVISTA Dytek DCH-99 Aspartic Esters

Dytek® DCH-99