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EC number: 700-127-8 | CAS number: 21862-63-5
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:
- 2011-11-23 to 2011-11-24
- 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 2010-10-20
- Type of method:
- OECD harmonised ring method
- Key result
- Surface tension:
- 41.85 mN/m
- Temp.:
- 20.1 °C
- Conc.:
- 90 vol%
- Remarks on result:
- other: standard deviation: 0.03 mN/m
- Conclusions:
- According to Regulation EC 440/2008 Method A.5 and OECD 115 the surface tension of a 90 % saturated aqueous solution mixture of the test item was determined to be 41.85 mN/m with a standard deviation of 0.03 mN/m at a mean temperature of 20.1 °C. Due to the fact that the surface tension is < 60 mN/m, the test item has surface-active properties.
Reference
Determination of the Density
The density of the 90 % saturated aqueous solution of the test item in double-distilled water was determined in a preliminary measurement to be 1.002 g/cm3 (20.1 °C).
Temperature
The temperature of the test mixture during the measurements was 20.1 °C. The room-temperature during the measurement was 20.3 to 20.6 °C.
Validation
The surface tension of the reference item hexane was determined on 2011-03-15 with 18.28 ± 0.01 mN/m (20 °C) for the Ring (Nr. 1, RI 21. This value is in the range of tolerance of ± 1 mN/m acc. to the literature value of 18.42 mN/m at 20 °C.
Description of key information
key data surface tension: 41.85 mN/m
Key value for chemical safety assessment
- Surface tension:
- 41.85
- in mN/m at 20°C and concentration in mg/L:
- 110.88
Additional information
According to Regulation EC 440/2008 Method A.5 and OECD 115 the surface tension of a 90 % saturated aqueous solution mixture of the test item was determined to be 41.85 mN/m with a standard deviation of 0.03 mN/m at a mean temperature of 20.1 °C. Due to the fact that the surface tension is < 60 mN/m, the test item has surface-active properties.
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