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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
Guideline study conducted in 2018
Qualifier:
according to guideline
Guideline:
OECD Guideline 112 (Dissociation Constants in Water)
GLP compliance:
no
Dissociating properties:
yes
No.:
#1
pKa:
2.26
Temp.:
23.5 °C
No.:
#2
pKa:
8.23
Temp.:
23.5 °C
Conclusions:
Two dissociation points identified and consistent with the free amine
It should be noted that the conclusions in the test report are based on incorrect details of chemical identity; at the time of testing the correct identity was still unknown.

Description of key information

Two pKa values were noted, consistent with the amine content.

Key value for chemical safety assessment

Additional information