Registration Dossier
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EC number: 247-074-2 | CAS number: 25524-95-2
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:
- 18 March 2019 - 02 May 2019
- 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:
- ca. 57.1 mN/m
- Temp.:
- 24 °C
- Conc.:
- 1 g/L
- Conclusions:
- The surface tension of duplicate, nominally 1.0 g/L solutions of test item in water has been determined to be 57.1 ± 1.0 mN/m at 20.4 ± 0.5 °C. The test item was considered to be surface-active. However, in the water solubility test, the water solubility results overall indicated that the test item is easily prone to hydrolysis. Therefore, the surface tension results were most likely due to the much more polar, hydrolysis product, than the non-polar, parent test item.
Reference
Results
The readings, times and temperatures for the sample solutions are shown in the following tables:
Sample 1
Age of Solution (min) |
Reading (mN/m) |
Temperature (°C) |
68 |
57.0 |
20.4 |
73 |
57.0 |
20.4 |
77 |
57.5 |
20.4 |
82 |
57.5 |
20.4 |
86 |
57.5 |
20.4 |
90 |
57.5 |
20.4 |
93 |
57.5 |
20.4 |
Sample 2
Age of Solution (min) |
Reading (mN/m) |
Temperature (°C) |
65 |
56.0 |
20.4 |
70 |
56.5 |
20.4 |
74 |
56.5 |
20.4 |
78 |
56.5 |
20.4 |
82 |
57.0 |
20.4 |
86 |
56.5 |
20.4 |
Mean Sample 1 result: 57.5mN/m(last 5 readings) pH of Sample 1:
5.2
Mean Sample 2 result: 56.6mN/m(last 5 readings) pH of Sample 2: 5.2
Overall result: 57.1±1.0mN/m
Overall temperature: 20.4 ± 0.5ºC
Description of key information
The surface tension of duplicate, nominally 1.0 g/Lsolutions of test item in water has been determined to be 57.1 ± 1.0mN/m at 20.4 ± 0.5°C. The test item was considered to be surface-active.
However, in the water solubility test, the water solubility results overall indicated that the test item is easily prone to hydrolysis. Therefore, the surface tension results were most likely due to the much more polar, hydrolysis product, than the non-polar, parent test item.
Key value for chemical safety assessment
- Surface tension:
- 57.1
- in mN/m at 20°C and concentration in mg/L:
- 1 000
Additional information
The determination of surface tension of Jasminlactone was carried out by a ring method. The procedure was designed to be compatible with the EC Method A.5 and the OECD test guideline 115, and was conducted in compliance with GLP.
The surface tension of duplicate, nominally 1.0 g/L solutions of test item in water has been determined to be 57.1 ± 1.0 mN/m at 20.4 ± 0.5 °C. The test item was considered to be surface-active. However, in the water solubility test, the water solubility results overall indicated that the test item is easily prone to hydrolysis. Therefore, the surface tension results were most likely due to the much more polar, hydrolysis product, than the non-polar, parent test item.
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