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Physical & Chemical properties

Surface tension

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Reference
Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
15/12/2016 to 16/12/2016
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)
Deviations:
no
GLP compliance:
no
Type of method:
OECD harmonised ring method
Key result
Surface tension:
64.32 mN/m
Temp.:
20.1 °C
Conc.:
12.6 mg/L
Remarks on result:
other: Mean result. Standard deviation = ± 0.05 mN/m

The validity criterion was met.

Time Line of the Determination of the Surface Tension:

         Date Time (hh:mm:ss)   Time from transfer of test solution to test start (min)      
 Preparation of the test item solution 2016-12 -15  13:39:42
Transfer into test vessel

    2016 -12 -16

  15:11:00
Start of measurement   15:36:03  32.4

Surface Tension, Temperature

 Measurement No.1  Time2 (min)  Time3 (min)  Surface Tension (mN/m)  Temperature (ºC)
 1  50.5  25.5  64.42  20.1
 2  51.4  26.3  64.34  20.1
 3  52.1  27.1  64.34  20.1
 4  52.9  27.8  64.27  20.1
 5  53.7  28.6  64.27  20.1
 6  54.4  29.4  64.35  20.1
 7  55.1  30.1  64.34  20.1
 8  55.9  30.8  64.29  20.1
 9  56.6  31.6  64.29  20.1
 10  57.4  32.4  64.33  20.1
 Mean  -  -  64.32  20.1
 SD (±)  -  -  0.05  0.0

1: of the last 10 measurements

2: Time from transfer of the test solution into test vessel until end of each measurement

3: Time from start of measurement until end of each measurement

SD: Standard deviation

Conclusions:
The mean surface tension of a 90% saturated aqueous solution of the test item was determined at 20 °C to be 64.32 mN/m (standard deviation ± 0.05 mN/m).
Executive summary:

The surface tension of the test item was measured in a 90 % saturated solution equivalent to 12.6 mg test item/L in a OECD harmonised ring method test performed according to the OECD 115 and EC A5 guidelines. The surface tension of the test item was determined at 20 °C to be 64.32 mN/m (standard deviation ± 0.05 mN/m).

The study is a guideline experimental study with no restrictions and is fully adequate for assessment (Klimisch 1).

Description of key information

The surface tension of the test item was measured in a 90 % saturated solution equivalent to 12.6 mg test item/L and was determined at 20 °C to be 64.32 mN/m (standard deviation ± 0.05 mN/m).

Key value for chemical safety assessment

Surface tension:
64.32
in mN/m at 20°C and concentration in mg/L:
12.6

Additional information

The surface tension of the test item was measured in a 90 % saturated solution equivalent to 12.6 mg test item/L in a OECD harmonised ring method test performed according to the OECD 115 and EC A5 guidelines (2017).

The study is a guideline experimental study with no restrictions and is fully adequate for assessment (Klimisch 1).