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EC number: 204-427-5
CAS number: 120-80-9
The peer-reviewed IUPAC Data Series report
the following dissociation constants for catechol: pKa1 = 9.23 and pKa2
= 13.05. In the aquatic environment, pH mainly varies from 6 to 8. As a
result, at these environmentally relevant pH, catechol should appear under
its non-dissociate form.
pKa1 = 9.23 and pKa2 = 13.05
A peer-reviewed document is available and
flagged as a key study. Based on the pKa values reported, and knowing
the pH of natural aqueous media, catechol should appear under its
non-dissociated form at environmentally relevant pH.
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