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EC number: 457-330-7 | CAS number: 66034-17-1
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:
- 14 February - 24 June 2003
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Version / remarks:
- Official Journal of the European Communities L383A volume 35, 29 December 1992
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- ring method
- Key result
- Surface tension:
- 72.7 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 021 mg/L
- Conclusions:
- The test substance is not considered to be surface active (surface tension >60 mN/m).
Reference
A value of 72.8 mN/m was taken as the correct value of the surface tension of water at 20°C. The surface tension of highly purified water at 20 °C was measured to be 69.1 mN/m. This yields a calibration factor of 72.8/69.1 = 1.054.
The solution was prepared 10 minutes before it was transferred into the tensiometer vessel. The results are shown in attachment "T-1063FM - results surface tension determinations.pdf".
The surface tension of the saturated solution of the test substance in water at a temperature of 20 °C stabilizes to 72.7 mN/m.
Description of key information
72.7 mN/m (1.021 g/L at 20°C) (EC A.5)
Key value for chemical safety assessment
- Surface tension:
- 72.7
- in mN/m at 20°C and concentration in mg/L:
- 1 021
Additional information
The test substance is not considered to be surface active (surface tension >60 mN/m).
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