Registration Dossier
Registration Dossier
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EC number: 466-380-9 | CAS number: 52350-17-1
Surface tension
Administrative data
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 01 Dec 2016 - 15 Feb 2017
- 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:
- 2 017
- Report date:
- 2017
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Version / remarks:
- adopted in 2008
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Version / remarks:
- adopted in 1995
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Department of Health, London, UK
- Type of method:
- ring method
Test material
- Test material form:
- solid: nanoform, no surface treatment
Constituent 1
Results and discussion
Surface tension
- Surface tension:
- 72.2 mN/m
- Temp.:
- 20 °C
- Remarks on result:
- other: Concentration
- Remarks:
- 90% saturation
Any other information on results incl. tables
The readings, times and temperatures for the sample solutions are shown in the following tables:
Table: Sample 1
Time [mins] |
Reading [mN/m] |
Temperature [°C] |
68 |
72.5 |
20.0 |
90 |
72.0 |
20.0 |
116 |
72.5 |
20.0 |
135 |
72.5 |
20.5 |
153 |
72.5 |
20.5 |
172 |
72.5 |
20.5 |
190 |
72.5 |
20.5 |
Table: Sample 2
Time [mins] |
Reading [mN/m] |
Temperature [°C] |
81 |
72.0 |
20.0 |
99 |
71.5 |
20.0 |
126 |
72.0 |
20.5 |
144 |
72.0 |
20.5 |
163 |
72.0 |
20.5 |
181 |
72.0 |
20.5 |
199 |
72.0 |
20.5 |
Mean Sample 1 result: 72.4 mN/m,
pH of Sample 1: 5.1
Mean Sample 2 result: 71.9 mN/m,
pH of Sample 2: 4.9
Mean result: 72.2 mN/m
Overall temperature: 20.0 ± 0.5 °C
Discussion
According to criteria mentioned in EC Method A.5, substances showing a surface tension lower than 60 mN/m under the conditions of this method should be regarded as being surface active.
Conclusion
The mean surface tension of duplicate aqueous solutions of test item prepared at 90% saturation has been determined to be 72.2 mN/m at 20.0 ± 0.5 °C. The test item was considered not to be surface-active.
Applicant's summary and conclusion
- Conclusions:
- The surface tension of the substance is 72.2 mN/m. The substance is not considered to be surface active.
- Executive summary:
In accordance with the OECD TG 115, the ring method was used to estimate the substances surface tension in water. The meausres were taken in duplicate at 20 degrees celcius, several measures were taken over 200 minutes.
The mean surface tension measure of the substance was 72.2 mN/m. The substane is not surface active.
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