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EC number: 947-663-0 | 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:
- 2017-2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- ring method
- Key result
- Surface tension:
- 39.6 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
- Conclusions:
- The surface tension at nominally 1 g/L of test item in water has been determined to be 39.6 mN/m at 20.7 ±0.5 °C. The test item was considered to be surface-active.
- Executive summary:
The determination of the surface tension of the test item was carried out by a ring method, using a procedure 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 the Testing of Chemicals, 27 July 1995.
The surface tension at nominally 1 g/L of test item in water has been determined to be 39.6 mN/m at 20.7 ±0.5 °C. 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:
Sample 1
Age of Solution (min) |
Reading (mN/m) |
Temperature (°C) |
69 |
39.5 |
20.6 |
78 |
39.5 |
20.6 |
88 |
40.0 |
20.6 |
112 |
39.5 |
20.6 |
129 |
39.5 |
20.6 |
Sample 2
Age of Solution (min) |
Reading (mN/m) |
Temperature (°C) |
151 |
39.5 |
20.6 |
163 |
39.5 |
20.8 |
174 |
39.5 |
20.8 |
185 |
39.5 |
21.0 |
210 |
39.5 |
21.0 |
Mean Sample 1 result : |
39.6 mN/m |
pH of Sample 1: |
7.01 |
Mean Sample 2 result : |
39.5 mN/m |
pH of Sample 2 : |
7.02 |
Mean result |
39.6 mN/m |
|
|
Overall temperature |
20.7 ±0.5 ºC |
|
|
Description of key information
The surface tension at nominally 1 g/L of test item in water has been determined to be 39.6 mN/m at 20.7 ±0.5 °C. The test item was considered to be surface-active
Key value for chemical safety assessment
- Surface tension:
- 39.6
- in mN/m at 20°C and concentration in mg/L:
- 1 000
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