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EC number: 947-358-2 | CAS number: -
Surface tension
Administrative data
Link to relevant study record(s)
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- From October 18, 2017 to February 13, 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- 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:
- no
- Remarks:
- The study was conducted in a facility which operates in accordance with Good Laboratory Practice principles; however no claim of GLP compliance was intended nor is made for this study
- Type of method:
- ring method
- Key result
- Surface tension:
- ca. 73 mN/m
- Temp.:
- 20.4 °C
- Conc.:
- 1 g/L
- Conclusions:
- Under the study conditions, the surface tension of the test substance was determined to be 73.0 mN/m at 20ºC.
- Executive summary:
A study was conducted to determine the surface tension of the test substance using the ring method, according to OECD Guideline 115 and EU Method A.5. Under the conditions of the study, the surface tension at nominally 1 g/L of test substance in water has been determined to be 73.0 ± 0.5 mN/m at 20.0 ± 0.5ºC. The test substance was therefore considered not to be surface-active (Envigo, 2018).
Reference
Results
The readings, times and temperatures for the sample solution is shown in the following table:
Age of Solution (min) |
Reading (mN/m) |
Temperature (°C) |
130 |
73.0 |
20.4 |
135 |
73.0 |
20.4 |
139 |
73.0 |
20.4 |
Overall result : 73.0 ± 0.5mN/m
pH
of Sample: 5.4
Overall
temperature: 20.0 ± 0.5ºC
Discussion
According to criteria stated 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 surface tension at nominally 1 g/L of test substance in water has been determined to be73.0 ± 0.5mN/m at20.0 ± 0.5ºC. The test substance was considered not to be surface-active.
Description of key information
The surface tension of the test substance was determined using the ring method according to OECD Guideline 115 (Envigo, 2018).
Key value for chemical safety assessment
- Surface tension:
- 73
- in mN/m at 20°C and concentration in mg/L:
- 20
Additional information
(not surface active)
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