Registration Dossier
Registration Dossier
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EC number: 940-123-5 | CAS number: 866889-74-9
Dissociation constant
Administrative data
Link to relevant study record(s)
Description of key information
The pKa of C16-18 DMAPA amidoamine is 9.45 at 25°C.
Key value for chemical safety assessment
- pKa at 20°C:
- 9.45
Additional information
C16-18 DMAPA amidoamine is a UVCB substance with variable chain length of the fatty acid moiety. Thus, the dissociation constant (pKa) can only be estimated for distinct structures. An estimation for the mixture cannot be given. For the estimation the ACD PhysChem software ACD/Labs Release 12.00, Product version 12.01 (Build 38056 09 Feb 2010) was used.
The pKa for the main constituents was calculated: N-(3-(dimethylamino)propyl)-hexadecanamide and N-(3-(dimethylamino)propyl)-octadecanamide are expected to be the major reaction products.
The pKa was calculated to be 9.45 at 25°C.
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