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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Link to relevant study record(s)

Reference
Endpoint:
dissociation constant
Type of information:
other: literature search
Adequacy of study:
key study
Study period:
1994-04-11
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: An extensive literature search has been performed and a report has been written. References are included in the report.
Qualifier:
no guideline required
Principles of method if other than guideline:
A literature search has been performed.
GLP compliance:
not specified
Dissociating properties:
yes
No.:
#1
pKa:
8.8
Temp.:
25 °C
Conclusions:
The pKa for the test substance is 8.8 at 25ºC.

Description of key information

The pKa for the test substance is 8.8 at 25ºC.

Key value for chemical safety assessment

pKa at 20°C:
8.8

Additional information

A literature search has been performed. The dissociating part of the molecule is the same as registered. It is assumed that length of the hydrophobe has no significant effect on the pKa value.

The pKa for the test substance is 8.8 at 25ºC. Furthermore, the pKa is not strongly temperature dependent.