Registration Dossier
Registration Dossier
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EC number: 857-673-6 | CAS number: 1879067-61-4
pH
Administrative data
- Endpoint:
- pH
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 019
- Report date:
- 2019
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 122 (Determination of pH, Acidity and Alkalinity)
- Version / remarks:
- 2013
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- (8α,9R,8'''α,9'''R)-1,1'-[(2,3,5,6-tetrafluoro-1,4-phenylene)bis(methylene)]bis(6'-methoxycinchonan-1-ium-9-ol) dibromide
- EC Number:
- 857-673-6
- Cas Number:
- 1879067-61-4
- Molecular formula:
- C48H52F4N4O4.2Br
- IUPAC Name:
- (8α,9R,8'''α,9'''R)-1,1'-[(2,3,5,6-tetrafluoro-1,4-phenylene)bis(methylene)]bis(6'-methoxycinchonan-1-ium-9-ol) dibromide
- Test material form:
- solid: particulate/powder
Constituent 1
Reagents
- Reagent:
- water
Results and discussion
pH value
- Key result
- pH value:
- 6.66
- Temp.:
- 20 °C
- Concentration:
- 1 other: % w/v
Any other information on results incl. tables
Experiment 1: pH value = 6.69 after 1 minute and pH value = 6.65 after 2 minutes
Experiment 2: pH value = 6.75 after 1 minute and pH value = 6.67 after 2 minutes
Applicant's summary and conclusion
- Conclusions:
- The pH value of a 1% w/v aqueous dispersion of the test substance was 6.66 at 20 °C.
- Executive summary:
The pH value of the substance was studied under GLP in accordance with OECD TG 122, using a calibrated pH meter. Two test solutions at a nominal concentration of 1% w/v were prepared by diluting aliquots of test substance (1.0275 and 1.0100 g) to 100 mL of high purity water (with a specification of resistance of >18.2 MΩ and a typical TOC content of <5 ppb). Each sample was then transferred to a sample cup and allowed to settle for a period of 1 minute before the pH value was determined. A second reading was done after 2 minutes. As the difference between the two readings did not exceed 0.1 pH units, a third reading after 10 minutes was not required. The results of the measurements were 6.65 and 6.67, giving a mean pH value of 6.66 at a concentration of 1% w/v and a temperature of 20 °C.
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