Registration Dossier
Registration Dossier
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EC number: - | CAS number: 37486-69-4
Surface tension
Administrative data
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- November 22-26, 2010
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Study was conducted in accordance with OECD guidance and GLP criteria. 90% saturation cannot be guaranteed, however solubility limit is low enough to allow adaptation of testing requirement.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 011
- Report date:
- 2011
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- ring method
Test material
- Details on test material:
- - Name of test material (as cited in study report: MTDID 21721
- Physical state: liquid
- Lot/batch no.: TFEE5-276/12/09-1
- Expiration date of the lot/batch: 31 December 2012
- Storage condition of test material: Room temperature in the dark under nitrogen
Constituent 1
Results and discussion
Surface tension
- Key result
- Surface tension:
- 71 mN/m
- Temp.:
- 20 °C
- Remarks on result:
- other: 90% dilution of 96-h stirred. Actual concentration not determined. Saturation cannot be guaranteed by this method.
Any other information on results incl. tables
Six measurements (Table) were taken indicating a constant surface tension.
Table, Surface tension measurement for TFEE-5 |
||
Measurement |
Time (s) |
Surface tension (mN/m) |
1 |
83 |
71.31 |
2 |
143 |
71.24 |
3 |
204 |
71.18 |
4 |
264 |
71.15 |
5 |
325 |
71.11 |
6 |
385 |
71.07 |
average |
─ |
71.17 |
Applicant's summary and conclusion
- Conclusions:
- TFEE-5 does not have surfactant properties
- Executive summary:
Surface tension of a water solution of TFEE-5 was measured using a ring apparatus according to OECD115 and EU Method A.5. A solution was made by stirring TFEE-5 for 96-hours, with undissolved material remaining after stirring. This solution was diluted to 90% for the test. Average surface tension measured at 20 ± 0.5 °C was 71.17 mN/m. TFEE-5 has no surfactant properties.
The test was conducted under OECD guidelines and was GLP-compliant. Saturation was assumed but cannot be guaranteed by the stirring method used. However, this test may be adapted according to column 2 of Annex VII due to water solubility. Therefore, this study is reliable with restrictions.
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