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EC number: 944-209-3 | CAS number: -
Surface tension
Administrative data
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2009-09-02
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study without detailed documentation
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 009
- Report date:
- 2009
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Qualifier:
- according to guideline
- Guideline:
- other: DIN EN 14370
- Principles of method if other than guideline:
- Amides, C8-18 even numbered, N-[3-(dimethylamino)propyl] build a stable emulsion with water. Therefore the surface tension was determined for a 1 g/L emulsion at 20 °C according to DIN EN 14370 (replaced DIN 53914) using the Wilhelmy plate method. Bidestilled water and 1-octanol have been measured as calibration and control sample.
- GLP compliance:
- no
- Type of method:
- plate method
Test material
- Reference substance name:
- Amides, C8-18 even numbered, N-[3-(dimethylamino)propyl]
- EC Number:
- 930-947-3
- IUPAC Name:
- Amides, C8-18 even numbered, N-[3-(dimethylamino)propyl]
Constituent 1
Results and discussion
Surface tension
- Surface tension:
- 27.8 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
Any other information on results incl. tables
Amides, C8-18 even numbered, N-[3-(dimethylamino)propyl] builds a stable emulsion with water. Therefore the surface tension was determined for a 1 g/L emulsion at 20 °C according to DIN EN 14370 using the Wilhelmy plate method. The surface tension of the test material was determined to be 27.8±0.1 mN/m at 20 °C. The individual results of the five measurements are compiled in the following table:
Measurement test item |
Time [s] |
Surface tension [mN/m] |
1 |
1.04 |
27.83918 |
2 |
31.03 |
27.74648 |
3 |
62.15 |
27.70745 |
4 |
92.05 |
27.66110 |
5 |
123.00 |
27.63670 |
Average [mN/m] |
|
27.72 |
Deviation [mN/m] |
|
0.08 |
Corrected Result |
|
27.77 |
Applicant's summary and conclusion
- Conclusions:
- The surface tension of Amides, C8-18 even numbered, N-[3-(dimethylamino)propyl] was determined to be 27.8±0.1 mN/m at 20 °C.
- Executive summary:
The surface tension of Amides, C8-18 even numbered, N-[3-(dimethylamino)propyl] was determined for a 1 g/L emulsion at 20 °C according to DIN EN 14370 using the Wilhelmy plate method. The surface tension of the test material was determined to be 27.8±0.1 mN/m at 20 °C. The test item has to be regarded as surface active.
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