Ethylenediamine

A two-carbon diamine with an amino group at each end.

Formula
C2H8N2
Functional group
Diamines
Molar mass
60.1 g/mol
Also known as
ethane-1,2-diamine, 1,2-Diaminoethane, 1,2-Ethanediamine, Ethylene diamine, Ethylendiamine, edamine

Overview

A two-carbon diamine with an amino group at each end.

Each nitrogen is a primary amine site. Protonation can therefore occur in stages, and reaction at one end need not exhaust the other group. Two amino groups distinguish this molecule from ethylamine and enable bifunctional coupling chemistry.

Identifiers

Formula
C2H8N2
Functional group
Diamines
Molar mass
60.1 g/mol
Also known as
ethane-1,2-diamine, 1,2-Diaminoethane, 1,2-Ethanediamine, Ethylene diamine, Ethylendiamine, edamine
Chemical identifiers
SMILES
C(CN)N
InChI
InChI=1S/C2H8N2/c3-1-2-4/h1-4H2
PubChem CID
3301

Properties

Melting Point
8.5 °C
Boiling Point
116-117 °C
Relative density (water = 1)
Relative density (water = 1): 0.9
Water solubility
Water solubility = 1X10+6 mg/l

Related compounds

  • Amines

    A two-carbon diamine with an amino group at each end.

  • Diamines

    A two-carbon diamine with an amino group at each end.

References

  1. PubChem Compound Summary: Ethylenediamine (CID 3301)National Center for Biotechnology Information · PubChem

    Identity, molecular formula, molecular weight and aliases retrieved via PUG REST on 2026-09-08.

  2. OpenStax Organic Chemistry: Structure and properties of aminesJohn McMurry · OpenStax · 2023

    Supports the qualitative structure and reactivity context; identity and numerical measurements retain their original references.

  3. OpenStax Organic Chemistry: Basicity of aminesJohn McMurry · OpenStax · 2023

    Supports the qualitative structural interpretation of the recorded molecular structure; no new physical measurement or verified preparative yield is claimed.

  4. Hazardous Substances Data Bank (HSDB): Ethylenediamine — melting pointHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/3301#section=Melting-Point. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Budavari, S. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals. Whitehouse Station, NJ: Merck and Co., Inc., 1996., p. 646

  5. Hazardous Substances Data Bank (HSDB): Ethylenediamine — boiling pointHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/3301#section=Boiling-Point. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Budavari, S. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals. Whitehouse Station, NJ: Merck and Co., Inc., 1996., p. 646

  6. ILO-WHO International Chemical Safety Cards (ICSCs): Ethylenediamine — densityILO-WHO International Chemical Safety Cards (ICSCs)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/3301#section=Density. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred.

  7. Hazardous Substances Data Bank (HSDB): Ethylenediamine — solubilityHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/3301#section=Solubility. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Riddick, J.A., W.B. Bunger, Sakano T.K. Techniques of Chemistry 4th ed., Volume II. Organic Solvents. New York, NY: John Wiley and Sons., 1985., p. 620