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EC number: 200-641-8 | CAS number: 67-03-8
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:
- Not specified
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Qualifier:
- according to guideline
- Guideline:
- other: ISO guidelines No. 9101:1987-12
- Version / remarks:
- Surface active agents- Determination of interfacial tension- Drop volume method.
- Deviations:
- yes
- Remarks:
- In deviation of the ISO guidelines No. 9101:1987-12 the lighter phase was air instead of a second liquid.
- GLP compliance:
- no
- Type of method:
- other: drop volume tensiometer
- Key result
- Surface tension:
- 72.6 mN/m
- Temp.:
- 20 °C
- Conc.:
- 0.96 other: wt.-%
- Conclusions:
- Under the conditions of this study the surface tension of the test material 0.96 wt.-% solution was determined to be 72.6 mN/m at 20.0 ± 0.5 °C.
- Executive summary:
The surface tension of the test material was investigated in accordance with the standardised guideline ISO 9101:1987-12. In deviation of the ISO guidelines No. 9101:1987-12 the lighter phase was air instead of a second liquid.
The test was performed using the Lauda TVT 2 Drop Volume Tensiometer and the test was performed in triplicate.
Under the conditions of this study the surface tension of the test material 0.96 wt.-% solution was determined to be 72.6 mN/m at 20.0 ± 0.5 °C.
Reference
Table 1: Determination of the surface tension of an aqueous 0.96 wt.-% test material solution
Measurement |
Temperature (°C) |
Interfacial Tension (mN/m) |
1 |
20.0 |
72.54 |
2 |
20.0 |
72.54 |
3 |
20.0 |
72.66 |
Mean |
20.0 |
72.6 |
Description of key information
Under the conditions of this study the surface tension of the test material 0.96 wt.-% solution was determined to be 72.6 mN/m at 20.0 ± 0.5 °C.
Key value for chemical safety assessment
- Surface tension:
- 72.6
Additional information
The surface tension of the test material was investigated in accordance with the standardised guideline ISO 9101:1987-12. In deviation of the ISO guidelines No. 9101:1987-12 the lighter phase was air instead of a second liquid. The study was awarded a reliability score of 2 in accordance with the criteria set forth by Klimisch et al. (1997).
The test was performed using the Lauda TVT 2 Drop Volume Tensiometer and the test was performed in triplicate.
Under the conditions of this study the surface tension of the test material 0.96 wt.-% solution was determined to be 72.6 mN/m at 20.0 ± 0.5 °C.
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