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EC number: 700-146-1 | CAS number: 1141487-54-8
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:
- 2010-11-04 to 2010-02-18
- 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)
- Version / remarks:
- , 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Version / remarks:
- , 2008
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- , signed 2009-10-29
- Type of method:
- OECD harmonised ring method
- Key result
- Surface tension:
- 44.4 mN/m
- Temp.:
- 20 °C
- Conc.:
- 90 vol%
- Remarks on result:
- other: mean value of six measurements
- Conclusions:
- According to OECD Guideline 115 (1995) and EU Method A.5 (2008), the surface tension of an 90% aqueous solution is 44.4.0 mN/m at 20°C. Hence, the substance has surface-active properties.
Reference
Measurement | 1 | 2 | 3 | 4 | 5 | 6 |
Time (s) | 491 | 542 | 793 | 945 | 1095 | 1247 |
σ (mN/m) | 44.01 | 44.45 | 44.08 | 44.81 | 44.37 | 44.55 |
Mean value: σ = 44.4 mN/m (corrected by Zuidema and Waters) .
Due to the fact that the surface tension is lower than 60 mN/m, the test item has surface-active properties.
Description of key information
The test substance has surface-active properties (44.4 mN/m at 20°C; 90 vol% aqueous solution).
Key value for chemical safety assessment
- Surface tension:
- 44.4
- in mN/m at 20°C and concentration in mg/L:
- 16.2
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