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EC number: 801-829-8 | CAS number: 1247790-47-1
Surface tension
Administrative data
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- From 6 March to 20 September 2013
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: According to the OECD Guideline and it is GLP.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 013
- Report date:
- 2013
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Deviations:
- yes
- Remarks:
- A platinum ring with a reduced circumference of 4 cm was used, whereas the guidelines specify 6 cm. This procedure with respect to the reduced ring dimensions has been considered not to have affected the integrity of the test.
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Deviations:
- yes
- Remarks:
- A platinum ring with a reduced circumference of 4 cm was used, whereas the guidelines specify 6 cm. This procedure with respect to the reduced ring dimensions has been considered not to have affected the integrity of the test.
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- ring method
Test material
- Reference substance name:
- 3,6-dimethylheptan-2-ol
- EC Number:
- 801-829-8
- Cas Number:
- 1247790-47-1
- Molecular formula:
- C9H20O
- IUPAC Name:
- 3,6-dimethylheptan-2-ol
- Details on test material:
- - Physical state: clear colorless liquid
- Storage condition of test material: room temperature in the dark
Constituent 1
Results and discussion
Surface tension
- Surface tension:
- 40.7 mN/m
- Temp.:
- 21.8 °C
Any other information on results incl. tables
Sample A
| Time (mins) | Reading (mN/m) | Temperature (ºC) |
| 64 | 40.5 | 21.8 |
| 77 | 40.5 | 21.8 |
| 96 | 40.5 | 21.8 |
| 108 | 41.0 | 21.8 |
| 136 | 41.0 | 21.8 |
Mean sample reading = 40.7 mN/m (all five readings)
Sample B
| Time (mins) | Reading (mN/m) | Temperature (ºC) |
| 69 | 41.0 | 21.8 |
| 82 | 40.5 | 21.8 |
| 99 | 40.5 | 21.8 |
| 119 | 40.5 | 21.8 |
| 142 | 41.0 | 21.8 |
Mean sample reading = 40.7 mN/m (all five readings)
Applicant's summary and conclusion
- Conclusions:
- The surface tension of duplicate 90% saturated solutions of test item in water has been determined to be 40.7±0.5 mN/m at 21.8±0.5ºC. The test item is considered to be surface-active.
- Executive summary:
The surface tension of duplicate 90% saturated solutions of test item in water has been determined to be 40.7±0.5 mN/m at 21.8±0.5ºC, using a ring method, designed to be compatible with Method A5 and Method 115 of the OECD Guideline. The test item is considered to be surface-active.
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