Registration Dossier
Registration Dossier
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EC number: 203-702-7 | CAS number: 109-76-2
Dissociation constant
Administrative data
Link to relevant study record(s)
Description of key information
The dissociation constant of the substance is 10,6 at 20°C.
Key value for chemical safety assessment
- pKa at 20°C:
- 10.6
Additional information
SRC PhysProp which is a peer reviewed data base reported the dissociation constant of trimethylenediamine as result from an experimental study to be 10,6 at 20°C. REAXYS which is also a peer reviewed data base reports the dissociation constant to be 10.55 at 22 °C. In addition a QSAR estimation was done using SPARC v4.5 with the result of 10,62 and 8,64 at 20°C. All values are in the same range.
The value which originates from SRC PhysProp which is a peer reviewed data base is regarded to be reliable for trimethylenediamine
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