Registration Dossier
Registration Dossier
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EC number: 617-084-5 | CAS number: 80474-45-9
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:
- 25th May 2015 - 27th May 2015
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- ring method
- Key result
- Surface tension:
- ca. 55.5 mN/m
- Temp.:
- 20 °C
- Conc.:
- 90 vol%
- Conclusions:
- Result : 55.5 mN.m-1(mean value)
- Executive summary:
The test is conducted to determine the effect of a compound, on the free surface enthalpy per unit surface area of water. The measuring system consists of; a platinum duNoüy ring attached to a tensiometer, and a measurement vessel to hold the test solution. The ring is suspended horizontally to the surface plane to avoid erroneous readings from the measuring system.
The surface tension of the water used to prepare the test solution is initially determined to ensure suitability for testing. The test is conducted in accordance to EU Regulation (EC) 440/2008, Annex Part A test A5.
1.0 mg of test material was weighed into a 100 ml flask and filled up to 100 ml using HPLC Grade Water. The sample filtered through a 1 µl acrodisc filter and then diluted to 90 %.
Result : 55.5 mN.m-1 (mean value)
Reference
| Solution Age (minutes) | Surface Tension Reading (mN/m) | |
| Run 1 | ||
| 0 | 66.8 | |
| 30 | 60.2 | |
| 60 | 58.1 | |
| 120 | 56.4 | |
| 180 | 55.5 | |
| 240 | 55.5 | |
| 300 | 55.4 | |
| 360 | 55.4 | |
| 420 | 55.4 | |
| Run 2 | ||
| 0 | 67.3 | |
| 30 | 61.1 | |
| 60 | 57.4 | |
| 120 | 55.9 | |
| 180 | 55.5 | |
| 240 | 55.5 | |
| 300 | 55.5 | |
| 360 | 55.5 |
Result : 55.5 mN.m-1 (mean value)
Description of key information
The test is conducted to determine the effect of a compound, on the free surface enthalpy per unit surface area of water. The measuring system consists of; a platinum duNoüy ring attached to a tensiometer, and a measurement vessel to hold the test solution. The ring is suspended horizontally to the surface plane to avoid erroneous readings from the measuring system.
The surface tension of the water used to prepare the test solution is initially determined to ensure suitability for testing. The test is conducted in accordance to EU Regulation (EC) 440/2008, Annex Part A test A5.
1.0 mg of test material was weighed into a 100 ml flask and filled up to 100 ml using HPLC Grade Water. The sample filtered through a 1 µl acrodisc filter and then diluted to 90 %.
Result : 55.5 mN.m-1(mean value)
Key value for chemical safety assessment
Additional information
Result : 55.5 mN.m-1(mean value)
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