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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Dissociation constant

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Administrative data

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Endpoint:
dissociation constant
Type of information:
not specified
Remarks:
handbook, unknown if based on experimental result or calculation
Adequacy of study:
weight of evidence
Study period:
1979
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Principles of method if other than guideline:
no method information, value reported in handbook
Dissociating properties:
no
pKa:
9.34
Temp.:
25 °C
Conclusions:
The dissociation constant of 1-naphthol is reported as 9.34 @ 25 oC
Executive summary:

The dissociation constant of 1-naphthol is reported as 9.34 @ 25 oC

Endpoint:
dissociation constant
Type of information:
calculation (if not (Q)SAR)
Adequacy of study:
weight of evidence
Study period:
2003
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
documentation insufficient for assessment
Principles of method if other than guideline:
calculation
Dissociating properties:
no
pKa:
9.3
Temp.:
25 °C
Conclusions:
The reported dissociation constant of 1-naphthol is 9.3 @ 25 oC
Executive summary:

The reported dissociation constant of 1-naphthol is 9.3 @ 25 oC

Description of key information

The dissociation constant is 9.3 @ 25 oC based on weight of evidence

Key value for chemical safety assessment

pKa at 20°C:
9.3

Additional information