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EC number: 404-170-0 | CAS number: 70750-63-9
Surface tension
Administrative data
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- March 8 - March 9, 1989
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: The study was performed according to guideline under GLP conditions.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 989
- Report date:
- 1989
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
- GLP compliance:
- yes
- Type of method:
- ring method
Test material
Constituent 1
Results and discussion
Surface tension
- Surface tension:
- >= 60.9 - <= 68.1 mN/m
- Temp.:
- 21 °C
- Conc.:
- 0.02 mg/L
Any other information on results incl. tables
Table 1. Surface Tension of Filtered and Centrifuged Solutions at Saturated Concentrations ( 21.0 -21.5oC) |
|||||
Solution |
Time in minutes since solution transferrd to measurement vessel |
Surface tension (mN/m) |
|||
measured |
mean (not corrected |
mean (corrected for calibration) |
mean corrected using Harkins & Jordan, 1930 |
||
Filtered |
13 |
60.3 |
60.3 |
61.6 |
60.9 |
16 |
59.4 |
||||
19 |
60.3 |
||||
21 |
60.2 |
||||
23 |
61.2 |
||||
25 |
60.3 |
||||
Centrifuged |
53 |
66.7 |
66.9 |
68.4 |
68.1 |
55 |
66.7 |
||||
57 |
66.6 |
||||
60 |
67.1 |
||||
62 |
67.1 |
||||
64 |
67.3 |
||||
66 |
67.1 |
||||
67 |
66.8 |
||||
70 |
67.0 |
||||
Applicant's summary and conclusion
- Conclusions:
- Following OECD 115 and EU Method A.5 guidelines, the surface tension of the test material was determined to be between 60.9 - 68.1 nM/m.
- Executive summary:
The surface tension of the test material was determined following OECD 115 and EU Method A.5 guidelines. Sample preparation consisted of preparing a saturated aqueous solution of the test material in Milli-Q water. One portion was filtered through a 0.45 um filter, the other portion was centrifuged. The surface tension of the filtered solution of the test material was determined to be 60.9 mN/m. The surface tension of the centrifuged solution was determined to be 68.1 mN/m. Results showed that the test material lowers the surface tension of water.
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