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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
pH
Type of information:
experimental study
Adequacy of study:
key study
Study period:
March 2011
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods with acceptable restrictions
Remarks:
Non-GLP, non-guideline study, minor restrictions in design and/or reporting but adequate for assessment.

Data source

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

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
Potentiometry
GLP compliance:
no

Test material

Constituent 1
Reference substance name:
F-DIOX acid
IUPAC Name:
F-DIOX acid
Constituent 2
Chemical structure
Reference substance name:
2,2-difluoro-2-{[2,2,4,5-tetrafluoro-5-(trifluoromethoxy)-1,3-dioxolan-4-yl]oxy}acetic acid
EC Number:
682-239-6
Cas Number:
1190931-41-9
Molecular formula:
C6HF9O6
IUPAC Name:
2,2-difluoro-2-{[2,2,4,5-tetrafluoro-5-(trifluoromethoxy)-1,3-dioxolan-4-yl]oxy}acetic acid
Details on test material:
- Name of test material (as cited in study report): F-DIOX acid
- Substance type: pure organic substance
- Physical state: liquid

- Analytical purity: > 99.99% (referred to the organic substance)
- Impurities (identity and concentrations): HF < 10 ppm, organic impurity < 150 ppm
- Composition of test material, percentage of components: content of water: 1.1 % w/w

Results and discussion

pH valueopen allclose all
Key result
pH value:
ca. 1.09
Temp.:
25 °C
Concentration:
ca. 5 other: % w/w
Key result
pH value:
ca. 0.79
Temp.:
25 °C
Concentration:
ca. 10 other: % w/w

Applicant's summary and conclusion

Conclusions:
Aqueous solution 5% w/w : pH = 1.09 (25°C)
Aqueous solution 10% w/w : pH = 0.79 (25°C)
Executive summary:

Measurements of pH were performed on F-DIOX acid aqueous solution through potentiometric analysis.


The results are the following:


Aqueous solution 5% w/w: pH = 1.09


Aqueous solution 10% w/w: pH = 0.79


The analysis was performed at 25 °C.