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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: publication
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Published in a peer-reviewed journal.
Justification for type of information:
Experimental results published in a peer-reviewed journal. This source is referenced by Kemikaali, Finland, and is sourced by e-Chem Portal.
Qualifier:
according to guideline
Guideline:
other: variety of methods
Principles of method if other than guideline:
This is a reliable compilation of partition coefficient data from the literature. The methodology varied, and the majority of data is experimental. Additionally, experimental data was generated for some of the compounds listed in this review article.
GLP compliance:
not specified
Dissociating properties:
no
No.:
#1
pKa:
5.65
Temp.:
20 °C
Remarks on result:
other: assume standard temperature
Conclusions:
The dissociation constant for 3-methylpyridine is 5.65.

Description of key information

5.63-5.65

Key value for chemical safety assessment

pKa at 20°C:
5.65

Additional information

Experimentally determined.