Registration Dossier
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EC number: 809-934-0 | CAS number: 627034-93-9
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:
- 10 August 2018 to 07 September 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:
- yes (incl. QA statement)
- Type of method:
- ring method
- Key result
- Surface tension:
- 66 mN/m
- Temp.:
- 20 °C
- Remarks on result:
- other: Conc. not specified
- Conclusions:
- The surface tension of the test material at nominally 1 g/L in water has been determined to be 66.0 ± 0.5 mN/m at 20.0 ± 0.5 °C. The test material was considered to be not surface-active.
- Executive summary:
The surface activity of the test material was investigated in a study which was conducted in accordance with the standardised guidelines OECD 115 and EU Method A.5, under GLP conditions, following the ring method.
Under the conditions of the study the surface tension of the test material at nominally 1 g/L in water has been determined to be 66.0 ± 0.5 mN/m at 20.0 ± 0.5 °C. The test material was considered to be not surface-active.
Reference
The readings, times and temperatures for the sample solutions are shown in the following tables:
Table 1: Sample 1 Results
Age of solution (min) |
Reading (mN/m) |
Temperature (°C) |
84 |
67.0 |
20.0 |
88 |
66.0 |
20.0 |
91 |
66.0 |
20.0 |
94 |
66.0 |
20.0 |
97 |
66.0 |
20.0 |
100 |
66.0 |
20.0 |
Table 2: Sample 2 Results
Age of solution (min) |
Reading (mN/m) |
Temperature (°C) |
115 |
67.5 |
20.0 |
119 |
66.0 |
20.0 |
122 |
66.0 |
20.0 |
125 |
66.0 |
20.0 |
128 |
66.0 |
20.0 |
131 |
66.0 |
20.0 |
The mean results were based on the last five readings that had reached a plateau.
Mean Sample 1 result : 66.0 mN/m
pH of Sample 1 : 5.7
Mean Sample 2 result : 66.0 mN/m
pH of Sample 2 : 5.7
Overall result : 66.0 ± 0.5 mN/m
Overall temperature : 20.0 ± 0.5 ºC
Description of key information
The surface tension of the test material at nominally 1 g/L in water has been determined to be 66.0 ± 0.5 mN/m at 20.0 ± 0.5 °C. The test material was considered to be not surface-active.
Key value for chemical safety assessment
- Surface tension:
- 66
- in mN/m at 20°C and concentration in mg/L:
- 1 000
Additional information
The surface activity of the test material was investigated in a study which was conducted in accordance with the standardised guidelines OECD 115 and EU Method A.5, under GLP conditions, following the ring method. The study was awarded a reliability score of 1 in accordance with the criteria set forth by Klimisch et al. (1997).
Under the conditions of the study the surface tension of the test material at nominally 1 g/L in water has been determined to be 66.0 ± 0.5 mN/m at 20.0 ± 0.5 °C. The test material was considered to be not surface-active.
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