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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
dissociation constant
Type of information:
experimental study
Adequacy of study:
key study
Study period:
25.10.2012-17.11.2012
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2012
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:
5-hydroxyisophthalic acid
EC Number:
210-565-7
EC Name:
5-hydroxyisophthalic acid
Cas Number:
618-83-7
Molecular formula:
C8H6O5
IUPAC Name:
5-hydroxybenzene-1,3-dicarboxylic acid
Constituent 2
Reference substance name:
5-hydroxyisopthalic acid
IUPAC Name:
5-hydroxyisopthalic acid
Details on test material:
Name of test material: 5-hydroxyisopthalic acid
Molecular formula:C8H6O5
Substance type: Organic

Results and discussion

Dissociating properties:
yes
Dissociation constantopen allclose all
No.:
#1
pKa:
0
Temp.:
23 °C
Remarks on result:
other: 0.00001735(0.1735 x 10-4)
No.:
#2
pKa:
0
Temp.:
23 °C
Remarks on result:
other: 0.00001736 (0.1736 x 10-4)
No.:
#3
pKa:
0
Temp.:
23 °C
Remarks on result:
other: 0.0000173(0.1730 x 10-4)

Applicant's summary and conclusion

Conclusions:
The experimental pKa value for 5-hydroxyisopthalic acid was found to be 0.00001735, 0.00001736, 0.0000173 at 23 degC.
Executive summary:

The experimental pKa value for 5-hydroxyisopthalic acid was found to be 0.00001735, 0.00001736, 0.0000173 at 23 degC indicating that it has dissociation properties.