Registration Dossier

Administrative data

Endpoint:
dissociation constant
Type of information:
experimental study
Adequacy of study:
key study
Study period:
24.01.2013 - 05.02.2013
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2013
Report Date:
2013

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other:
Principles of method if other than guideline:
Measurement of capacity of a compound to dissociate into respective ions.
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
other: amorphous
Details on test material:
- Name of test material: 3-amino-4-methoxybenzenesulphonic acid
- Molecular formula: C7H9NO4S
- Molecular weight: 203.22
- Substance type: organic
- Physical state: Soild

Results and discussion

Dissociating properties:
yes
Dissosciation constantopen allclose all
No.:
#1
pKa:
0.001
Temp.:
24 °C
No.:
#2
pKa:
0.001
Temp.:
24 °C
No.:
#3
pKa:
0.001
Temp.:
24 °C

Applicant's summary and conclusion

Conclusions:
The average experimental pKa value for 3-amino-4-methoxybenzenesulphonic acid was found to be 0.0012566 at 24 deg C indicating that it has dissociation properties.
Executive summary:

The average experimental pKa value for 3-amino-4-methoxybenzenesulphonic acid was found to be 0.0012566 at 24 deg C indicating that it has dissociation properties.