Registration Dossier
Registration Dossier
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EC number: 288-293-3 | CAS number: 85711-34-8
Surface tension
Administrative data
Link to relevant study record(s)
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- 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:
- May 2008
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Version / remarks:
- July 1995
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- ring method
- Key result
- Surface tension:
- 57.5 mN/m
- Temp.:
- 20 °C
- Conc.:
- 90 other: % saturated aqueous solution
- Conclusions:
- The test substance is considered to be surface active (surface tension <60 mN/m).
Reference
Table 1: Time dependence of the surface tension after transferring the solution to the measurement vessel
Surface tension (mN/m) |
Equilibrium time (sec) |
61.2 |
640 |
58.9 |
720 |
57.8 |
780 |
58.2 |
900 |
58.6 |
900 |
58.6 |
1200 |
Equilibrium time = time after transferring the solution to the vessel until measuring the surface tension of the solution
Table 2: Measured surface tension values and equilibrium times
Surface tension (mN/m) |
Equilibrium time (sec) |
58.5 |
900 |
58.6 |
900 |
59.0 |
900 |
58.7 |
900 |
58.5 |
900 |
Equilibrium time = time after transferring the solution to the vessel until measuring the surface tension of the solution
Overall mean surface tension = 58.5 mN/m
Calibration factor and Harkins-Jordan corrected value =57.5 mN/m
Description of key information
57.5 mN/m (90% satuarated aqueous solution) at 20°C) (OECD 115, EC A.5)
Key value for chemical safety assessment
Additional information
57.5 mN/m at 20°C and90% saturated aqueous solution
The test substance is considered to be surface active (surface tension < 60 mN/m).
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