Registration Dossier
Registration Dossier
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EC number: 204-482-5 | CAS number: 121-57-3
Dissociation constant
Administrative data
Link to relevant study record(s)
Description of key information
In a GLP-study according to OECD test guideline, the test substance is considered as an acid with one proton donator unit, corresponding to pKA = 3.35.
Key value for chemical safety assessment
- pKa at 20°C:
- 3.35
Additional information
In a GLP-study according to OECD test guideline, the test substance is considered as an acid with one proton donator unit, corresponding to pKA = 3.35.First and second determination showed excellent correlation.
Literature (Handbook of Chemistry and Physics, 90thedition, CRC Press) states the pKa of 4-aminobenzoic acid as 3.23.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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