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EC number: 240-369-7 | CAS number: 16260-27-8
Surface tension
Administrative data
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2018-02-12 to 2018-02-13
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Version / remarks:
- 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Version / remarks:
- 2008
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- signed 2017-02-28
- Type of method:
- ring method
Test material
- Reference substance name:
- Zinc dimyristate
- EC Number:
- 240-369-7
- EC Name:
- Zinc dimyristate
- Cas Number:
- 16260-27-8
- Molecular formula:
- C28H54O4Zn
- IUPAC Name:
- Zinc ditetradecanoate
- Test material form:
- solid: particulate/powder
- Details on test material:
- Trade name: zinc dimyristate
Appearance: whitish powder
Constituent 1
Results and discussion
Surface tension
- Surface tension:
- 66.87 mN/m
- Temp.:
- 20 °C
- Conc.:
- 90 vol%
- Remarks on result:
- other: 90 vol % saturated solution
Any other information on results incl. tables
Measured surface tension values
Value No. |
1st Measurement (20 min after preparing the solution) σ [mN/m] |
2nd Measurement (35 min after preparing the solution) σ [mN/m] |
1 |
66.07 |
67.81 |
2 |
66.04 |
67.78 |
3 |
66.01 |
67.75 |
4 |
65.98 |
67.72 |
5 |
65.96 |
67.70 |
6 |
65.94 |
67.68 |
Mean value of the individual values |
66.00 ± 0.05 |
67.74 ± 0.05 |
Total mean value |
66.87 ± 1.23 |
|
The test item has a mean surface tension of 66.87 mN/m. Thus, the test item is not to be regarded as surface active according to regulation EC No. 440/2008 Part A Method A.5.
Applicant's summary and conclusion
- Conclusions:
- According to OECD Test Guideline 115 (1995)and Regulation EC No. 440/2008 Part A Method A.5. the surface tension at 20 °C of test item zinc ditetradecanoate was determined to be: σ = 66.87 mN/m. Therefore, the test item is not to be regarded as surface active material.
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