Registration Dossier
Registration Dossier
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EC number: 700-567-0 | CAS number: 1231728-34-9
Dissociation constant
Administrative data
Link to relevant study record(s)
Description of key information
Dissociation constant (at 25 °C): pKa = 5.0
Key value for chemical safety assessment
- pKa at 20°C:
- 5
Additional information
The dissociation constant of hexanoic acid, 3,5,5-trimethyl-, tin (2+) salt (2:1) was investigated in a study conducted according to OECD guideline 112 and DIN EN ISO/IEC with the titration method.
Dissociation constant (at 25 °C): pKa = 5.0
The dissociation constant of 3,5,5-trimethylhexanoic acid was calculated (ACD/Labs Version 12.01) to be pKa = 4.8 at 25 °C.
The pKs values of the salt and of salt-constituent 3,5,5-trimethylhexanoic acid are almost identical.
This is in accordance with, and a proof of the expected total dissociation of the salt to Tin(2 +)-cation and the 3,5,5-trimethylhexanoat(-)-anion.
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