Registration Dossier
Registration Dossier
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EC number: 226-247-6 | CAS number: 5333-84-6
Dissociation constant
Administrative data
Link to relevant study record(s)
Description of key information
Dissociation constants in water: pKa1= 3.82 and pKa2= 6.85 at 20 deg C
Key value for chemical safety assessment
- pKa at 20°C:
- 3.82
Additional information
The dissociation constants in water have been determined in accordance with OECD test methods.
3-methylcyclohex-4-ene-1,2-dicarboxylic acid (3-MTHPAc D4) was found to have the following dissociation constants at 20 ± 1 °C: pKa1=3.82 and pKa2=6.85.
The species distribution generated by the dissociation of this acid was determined, according to these constants, as function of pH.
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