Registration Dossier
Registration Dossier
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EC number: 211-581-7 | CAS number: 670-96-2
Water solubility
Administrative data
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 16-29 November 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 017
- Report date:
- 2018
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- Version / remarks:
- 1995
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- flask method
Test material
- Reference substance name:
- 2-phenylimidazole
- EC Number:
- 211-581-7
- EC Name:
- 2-phenylimidazole
- Cas Number:
- 670-96-2
- Molecular formula:
- C9H8N2
- IUPAC Name:
- 2-phenyl-1H-imidazole
- Test material form:
- solid: flakes
Constituent 1
Results and discussion
Water solubility
- Key result
- Water solubility:
- 1.86 g/L
- Conc. based on:
- test mat.
- Temp.:
- 20 °C
- pH:
- >= 9.57 - <= 9.66
Any other information on results incl. tables
Preliminary test of water solubility
The aqueous solubility at 25°C of the test itemwas reported below.
Global results of the preliminary test of water solubility at 25°C.
Preliminary test |
Approximate solubility ~ 0.7g/L |
pH of watery solution |
9.51 |
Water solubility tests
The aqueous solubility at 20°C of the test item is reported below:
Water solubility test |
Aqueous solubility 1.86 g/L |
RSD% = 1.12% |
The results from vessels 1 and 2 shown a tendency of increasing values while rest constant from vessel 2 to vessel 5; For this reason the results of these three last flasks, which did not differ by more than 15%, are averaged. The vessel 5 was not considered: it was injected after 5 days and 1/2 at 30°C, without conditionning at 20° C for 24 hours.
The whole test (with longer equilibration times, see values of vessels from 1 to 4) was reported too.
pH determinations
The pH determination at 20°C of each test sample is reported below:
pH |
S1 |
S2 |
S3 |
S4 |
S5 |
pH (20°C) |
9.66 |
9.57 |
9.64 |
9.62 |
9.53 |
Conclusions
The water solubility of test item at 20° C proved to be 1.86 g/L
Applicant's summary and conclusion
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