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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment

Data source

Reference
Title:
Unnamed
Year:
2018
Report date:
2018

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 112 (Dissociation Constants in Water)
Version / remarks:
Titration method
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
Vanadium oxysulphate
EC Number:
949-084-9
Molecular formula:
V(n)O(x)(SO4)(y)
IUPAC Name:
Vanadium oxysulphate
Specific details on test material used for the study:
Batch number of test material: C-06-3661

Results and discussion

Dissociating properties:
yes
Dissociation constant
No.:
#1
pKa:
< 0.1
Temp.:
20 °C
Remarks on result:
not determinable because of methodological limitations

Any other information on results incl. tables

The precise pKa was not possible to determine, but the production grade material showed dissociation

It is noted that solublity in water is greatly reduced at ca pH 4

Applicant's summary and conclusion

Conclusions:
The precise pKa was not possible to determine, but the production grade material showed dissociation
It is noted that solublity in water is greatly reduced at ca pH 4