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EC number: 614-257-7 | CAS number: 68071-40-9
Surface tension
Administrative data
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 02 Feb - 28 Apr 2016
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- GLP guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 016
- Report date:
- 2016
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Version / remarks:
- adopted in 2008
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Version / remarks:
- adopted in 1995
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Hess. Ministerium für Umwelt, Energie, Landwirtschaft und Verbraucherschutz,Wiesbaden, Germany
- Type of method:
- ring method
Test material
- Reference substance name:
- Reaction product of 2-Propenoic acid and Oxirane, mono[(C12-16-alkyloxy)methyl] derivs.
- EC Number:
- 614-257-7
- Cas Number:
- 68071-40-9
- Molecular formula:
- C18H34O4, C20H38O4 and C22H42O4 (mainly)
- IUPAC Name:
- Reaction product of 2-Propenoic acid and Oxirane, mono[(C12-16-alkyloxy)methyl] derivs.
Constituent 1
- Specific details on test material used for the study:
- Storage conditions: ambient temperature (< 40 °C), keep container tightly closed, protected from sunlight
Results and discussion
Surface tension
- Surface tension:
- ca. 37 mN/m
- Temp.:
- 20 °C
- Remarks on result:
- other: the concentration tested was 90% sat. solubility
Any other information on results incl. tables
Measurement results are shown in Table 1 below.
Table 1 – Measured surface tension values
Value no. |
1st measurement (18 min after test solution preparation) σ [mN/m] |
2nd measurement (35 min after test solution preparation) σ [mN/m] |
1 |
36.85 |
37.17 |
2 |
36.83 |
37.15 |
3 |
36.80 |
37.13 |
4 |
36.78 |
37.12 |
5 |
36.78 |
37.08 |
6 |
36.73 |
37.06 |
Mean value of individual values |
36.80 ± 0.03 |
37.12 ± 0.03 |
Total mean value |
36.96 ± 0.16 |
|
Discussion
Substances with a surface tension < 60 mN/m under the conditions of the EC Method A.5 should be regarded as being surface active.
Conclusion
The mean surface tension of an aqueous solution of test item at a concentration of 90% of the saturation solubility and at 20 °C was found to be equal to 37.0 mN/m. Therefore, the test item is considered as surface-active.
Applicant's summary and conclusion
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