Registration Dossier
Registration Dossier
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EC number: 263-218-7 | CAS number: 61792-31-2
Surface tension
Administrative data
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 05 Feb - 20 Feb 2020
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 020
- Report date:
- 2020
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Deviations:
- not specified
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Deviations:
- not specified
- GLP compliance:
- yes
- Type of method:
- OECD harmonised ring method
Test material
- Reference substance name:
- N-[3-(dimethylamino)propyl]dodecanamide N-oxide
- EC Number:
- 263-218-7
- EC Name:
- N-[3-(dimethylamino)propyl]dodecanamide N-oxide
- Cas Number:
- 61792-31-2
- Molecular formula:
- C17H36N2O2
- IUPAC Name:
- N-[3-(dimethylamino)propyl]dodecanamide N-oxide
- Test material form:
- liquid
Constituent 1
Results and discussion
Surface tension
- Surface tension:
- 27.86 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
- Remarks on result:
- other: Surface active substance
Any other information on results incl. tables
Results:
The results of the test on the determination of the surface tension of the test solution are given in table below. The individual measurements were obtained with a coefficient of variation of < 0.2 mN/m.
Surface Tension of the Test Item:
Measurement |
Time passed after measurement start[seconds] |
Surface tension(mN/m) |
|
Individual σ multiplied by Harkins-Jordan corrected value |
mean σ |
||
1 |
34.58 |
27.87 |
27.86 |
2 |
57.84 |
27.86 |
|
3 |
80.96 |
27.86 |
|
4 |
103.63 |
27.85 |
|
5 |
126.67 |
27.85 |
|
Conclusion-
The OECD harmonized ring method was applied for the determination of the surface tension of N-[3-(dimethyloxidoamino)propyl]-dodecanamide. The surface tension of a test solution at a concentration of 1 g/L (corrected for purity) in water and at 20°C was 27.86 mN/m. Because the surface tension was < 60 mN/m, the test item is considered to be surface active.
Applicant's summary and conclusion
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