Registration Dossier
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EC number: 947-519-7 | 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:
- 2017-03-28 - 2017-09-04
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Version / remarks:
- from 2008-05-30
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Version / remarks:
- from 1995-07-27
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- ring method
- Surface tension:
- >= 72.5 - <= 73 mN/m
- Temp.:
- 20.2 °C
- Conc.:
- 1.1 g/L
- Conclusions:
- The surface tension of a 90 % saturated solution from a loading rate of 1.1 g/L has been determined to be 72.5 to 73.0 ± 0.5 mN/m at 20.2 ± 0.5 °C. The test item was considered to be not surface-active.
- Executive summary:
Surface Tension: 72.5 to 73.0 ± 0.5 mN/m at 20.2 ± 0.5 °C (90 % saturated solution from a loading rate of 1.1 g/L), using a ring method, designed to be compatible with Method A5 Surface Tension of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 115 of the OECD Guidelines for Testing of Chemicals, 27 July 1995. The test item was considered to be not surface-active.
Reference
The readings, times and temperatures for the sample solutions are shown in the following tables:
Sample 1
| Age of solution (mins) | Reading (mN/m) | Temperature (°C) |
| 71 | 73.0 | 20.2 |
| 80 | 73.0 | 20.2 |
| 109 | 73.0 | 20.2 |
| 118 | 73.0 | 20.4 |
| 127 | 73.0 | 20.4 |
Sample 2
| Age of Solution (mins) | Reading (mN/m) | Temperature (°C)) |
| 136 | 72.5 | 20.4 |
| 144 | 72.5 | 20.4 |
| 153 | 72.5 | 20.4 |
| 162 | 72.5 | 20.4 |
| 171 | 72.5 | 20.4 |
Mean Sample 1 result: 73.0 mN/m pH of Sample 1: 6.7
Mean Sample 2 result 72.5 mN/m pH of Sample 2: 6.7
Overall result: 72.5 to 73.0 ± 0.5 mN/m
Overall temparature: 20.2 ± 0.5 °C
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.
Description of key information
Surface Tension: 72.5 to 73.0 ± 0.5 mN/m at 20.2 ± 0.5 °C (90 % saturated solution from a loading rate of 1.1 g/L), using a ring method, designed to be compatible with Method A5 Surface Tension of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 115 of the OECD Guidelines for Testing of Chemicals, 27 July 1995. The test item was considered to be not surface-active.
Key value for chemical safety assessment
- Surface tension:
- 72.5
Additional information
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