Registration Dossier
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EC number: 949-740-4 | CAS number: -
Surface tension
Administrative data
Link to relevant study record(s)
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 19 December 2018 to 21 February 2019
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- 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 (incl. QA statement)
- Type of method:
- ring method
- Key result
- Surface tension:
- 30.5 mN/m
- Temp.:
- 20 °C
- Remarks on result:
- other: The surface tension at nominally 90 % saturation of test item in water has been determined to be 30.5 mN/m at 20.0 ± 0.5 °C
- Conclusions:
- The surface tension at nominally 90% saturation of the test item in water has been determined to be 30.5 mN/m at 20.0 ± 0.5°C. The test item was considered to be surface-active.
- Executive summary:
The surface tension was determined to be 30.5 mN/m (90% saturated solution) at 20.0 ± 0.5°C, using a ring method, designed to be compatible with Method A.5 Surface Tension of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 115 of the OECD Guidelines for Testing of Chemicals, 27 July 1995. As the surface tension was determined to be less than 60 mN/m, the test item was considered to be surface-active.
Reference
The readings, times and temperatures for the sample solutions are shown in the following tables:
Table 2 Sample 1
Age of solution (min) |
Reading (mN/m) |
Temperature (°C) |
90 |
30.5 |
19.8 |
94 |
30.5 |
19.8 |
97 |
30.5 |
20.0 |
100 |
30.5 |
20.0 |
103 |
30.5 |
20.0 |
Table 3 Sample 2
Age of solution (min) |
Reading (mN/m) |
Temperature (°C) |
112 |
30.5 |
20.0 |
115 |
30.5 |
20.0 |
118 |
30.5 |
20.0 |
121 |
30.5 |
20.0 |
124 |
30.5 |
20.0 |
Mean Sample 1 result: 30.5 mN/m pH of Sample 1: 5.8
Mean Sample 2 result: 30.5 mN/m pH of Sample 2: 5.7
Mean result: 30.5 mN/m
Overall temperature: 20.0 ± 0.5°C
Description of key information
30.5 mN/m; OECD 115; Fox, J. M. (2019)
Key value for chemical safety assessment
- Surface tension:
- 30.5
Additional information
As the surface tension was determined to be less than 60 mN/m at nominally 90% saturation, the test item was considered to be surface-active.
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