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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Dissociation constant

Currently viewing:

Administrative data

Endpoint:
dissociation constant
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2011
Report date:
2012

Materials and methods

Test guideline
Qualifier:
according to guideline
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

Constituent 1
Chemical structure
Reference substance name:
2-[(3-aminophenyl)sulphonyl] hydrogensulphate
EC Number:
219-668-1
EC Name:
2-[(3-aminophenyl)sulphonyl] hydrogensulphate
Cas Number:
2494-88-4
Molecular formula:
C8H11NO6S2
IUPAC Name:
[2-(3-aminobenzenesulfonyl)ethoxy]sulfonic acid

Results and discussion

Dissociating properties:
yes
Dissociation constantopen allclose all
No.:
#1
pKa:
0.006
Temp.:
25 °C
Remarks on result:
other: Weak Dissociation
No.:
#2
pKa:
0.005
Temp.:
25 °C
Remarks on result:
other: Weak Dissociation
No.:
#3
pKa:
0.006
Temp.:
25 °C
Remarks on result:
other: Weak Dissociation

Applicant's summary and conclusion

Conclusions:
Dissociation : Weak Dissociation