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Dissociation constant

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Reference
Endpoint:
dissociation constant
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Data from peer-reviewed handbook or collection of data
Principles of method if other than guideline:
no data
GLP compliance:
not specified
Dissociating properties:
yes
No.:
#1
pKa:
4.34
Temp.:
18 °C
Remarks on result:
other: Solvent: water; Method: potentiometric
No.:
#2
pKa:
5.44
Temp.:
18 °C
Remarks on result:
other: Solvent: water; Method: potentiometric
No.:
#1
pKa:
4.43
Temp.:
20 °C
Remarks on result:
other: Solvent: water; Method: potentiometric
No.:
#2
pKa:
5.42
Temp.:
20 °C
Remarks on result:
other: Solvent: water; Method: potentiometric
No.:
#1
pKa:
4.43
Temp.:
25 °C
Remarks on result:
other: Solvent: water; Method: potentiometric and conductometric
Executive summary:

The dissociation constants of adipic acid are pK1= 4.43 and pK2= 5.42 at 20 °C (Beilstein, 2003).

Description of key information

The dissociation constants of adipic acid are pK1 4.43 and pK2 5.42 at 20 °C (Beilstein, 2003). 

Key value for chemical safety assessment

Additional information

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