Adipic acid

The dicarboxylic acid paired with hexamethylenediamine to make nylon 6,6.

Formula
C6H10O4
Functional group
Two carboxylic acid groups
Molar mass
146.14 g/mol
Also known as
hexanedioic acid, adipic acid

Overview

Hexanedioic acid

The dicarboxylic acid paired with hexamethylenediamine to make nylon 6,6.

Each molecule has six carbon atoms and two carboxylic acid groups. Both functional groups participate in polyamide formation.

Identifiers

Formula
C6H10O4
Functional group
Two carboxylic acid groups
Molar mass
146.14 g/mol
Also known as
hexanedioic acid, adipic acid
Chemical identifiers
SMILES
O=C(O)CCCCC(=O)O
InChI
InChI=1S/C6H10O4/c7-5(8)3-1-2-4-6(9)10/h1-4H2,(H,7,8)(H,9,10)
PubChem CID
196

Properties

Melting Point
151.5 °C
Boiling Point
337.5 °C at 760 mm Hg
Density
1.360 g/cu cm at 25 °C
Water solubility
1.4 g/100 mL water at 10 °C

Related compounds

  • Dicarboxylic acids

    The dicarboxylic acid paired with hexamethylenediamine to make nylon 6,6.

References

  1. PA 6 and PA 66 intermediatesBASF
  2. Reference document on best available techniques in the production of polymersEuropean Commission, Joint Research Centre · 2007
  3. PubChem: Adipic acidNational Center for Biotechnology Information

    Identity retrieved 2026-09-08; matched against the record's isomeric structure. Unspecified stereochemistry remains unspecified.

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

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/196#section=Melting-Point. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Haynes, W.M. (ed.). CRC Handbook of Chemistry and Physics. 95th Edition. CRC Press LLC, Boca Raton: FL 2014-2015, p. 3-10

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

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/196#section=Boiling-Point. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: O'Neil, M.J. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals. Cambridge, UK: Royal Society of Chemistry, 2013., p. 30

  6. Hazardous Substances Data Bank (HSDB): Adipic acid — densityHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/196#section=Density. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Haynes, W.M. (ed.). CRC Handbook of Chemistry and Physics. 95th Edition. CRC Press LLC, Boca Raton: FL 2014-2015, p. 3-10

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

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/196#section=Solubility. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Dean, J.A. Handbook of Organic Chemistry. New York, NY: McGraw-Hill Book Co., 1987., p. 1-251