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EC number: 610-472-5 | CAS number: 49707-23-5
Surface tension
Administrative data
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2010-03-09 to 2010-04-07
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Recent, well documented GLP and guideline study.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 010
- Report date:
- 2010
Materials and methods
Test guidelineopen allclose all
- 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
- Qualifier:
- according to guideline
- Guideline:
- other: DIN EN 14370
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- ring method
Test material
- Reference substance name:
- N-(2,2-dimethoxyethyl)prop-2-enamide
- EC Number:
- 610-472-5
- Cas Number:
- 49707-23-5
- Molecular formula:
- C7 H13 N1 O3
- IUPAC Name:
- N-(2,2-dimethoxyethyl)prop-2-enamide
Constituent 1
Results and discussion
Surface tension
- Surface tension:
- 68 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
Any other information on results incl. tables
Table1. Measured Surface Tension of Water
|
|
|
|
Time |
Surface Tension of Water |
||
Replicate |
expired* |
Temperature |
measured |
No. |
[min] |
[°C] |
[mN/m] |
|
|
|
|
1 |
0 |
20.3 |
71.0 |
2 |
15 |
20.4 |
71.1 |
3 |
30 |
20.4 |
71.1 |
4 |
45 |
20.4 |
71.1 |
5 |
60 |
20.4 |
71.2 |
mean value (n=5): |
71.1 |
||
SD (n=5): |
0.1 |
||
|
|
|
|
Literature value for surface tension of water: |
72.8 mN/m |
||
correction factor (72.8 mN/m / 71.1 mN/m): |
1.024 |
||
* Time expired since the pure water was transferred into the test vessel. |
|||
Table2. Measured Surface Tension of an Aqueous Solution of the Test Item
|
|
|
|
|
|
|
Measurement |
Replicate |
Time |
Surface Tension |
|||
No. |
No. |
expired* |
Temperature |
measured |
corrected1 |
corrected2 |
[min] |
[°C] |
[mN/m] |
[mN/m] |
[mN/m] |
||
|
|
|
|
|
|
|
1 |
1 |
0 |
20.2 |
66.1 |
||
2 |
15 |
20.2 |
66.9 |
|||
3 |
30 |
20.2 |
67.0 |
|||
4 |
45 |
20.1 |
66.7 |
|||
5 |
60 |
20.1 |
66.8 |
|||
mean value (n=5): |
66.7 |
68.3 |
68.0 |
|||
SD (n=5): |
0.4 |
|||||
|
|
|
|
|
|
|
* Time expired since the test item was transferred into the test vessel. |
||||||
1corrected for the calibration factor (water) |
factor: 1.024 |
|||||
2corrected by Harkins-Jordan-regression (y = 0.7232 * x1.0756) |
||||||
rounded values were used for the correction |
||||||
Applicant's summary and conclusion
- Conclusions:
- The surface tension of an aqueous solution of the test item was determined to be 68.0 mN/m at 20°C ± 0.2 °C.
- Executive summary:
The surface tension of an aqueous solution of the test item was determined to be 68.0 mN/m at 20°C ± 0.2 °C.
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