Registration Dossier
Registration Dossier
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EC number: 202-546-7 | CAS number: 96-93-5
Dissociation constant
Administrative data
Link to relevant study record(s)
Description of key information
The experimental pKa value for 3-amino-4-hydroxy-5-nitrobenzenesulphonic acid was found to be 0.0095 , 0.0099 and 0.0097 at 30 degC indicating that it has dissociation properties.The average pKa value at 20 Deg C is equivalent to 0.00646
Key value for chemical safety assessment
- pKa at 20°C:
- 0.006
Additional information
The experimental pKa value for 3-amino-4-hydroxy-5-nitrobenzenesulphonic acid was found to be 0.0095 , 0.0099 and 0.0097 at 30 degC indicating that it has dissociation properties.The average pKa value at 20 Deg C is equivalent to 0.00646.
The supporting study shows value different from the key study which could be due to the difference in the estimation conditions. However for the purpose of the dossier and chemical safety assessment, the key study values shall be used.
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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