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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:
Study initiation date: 2 November 2009 Study completion date: 10 March 2010
Reliability:
1 (reliable without restriction)
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
GLP compliance:
yes
Type of method:
ring method
Surface tension:
38 mN/m
Temp.:
20.2 °C
Conc.:
0.366 g/L

Details on measurements:

 

First run

Second run

Number of measurements

10

10

Total measuring time [min:s]

5:54

5:53

Measuring time of the last 10 measurements [min:s]

5:54

5:53

Measurement 1

37.65

37.98

Measurement 2

37.68

37.92

Measurement 3

37.67

37.95

Measurement 4

37.69

37.94

Measurement 5

37.71

37.89

Measurement 6

37.73

37.97

Measurement 7

37.71

37.91

Measurement 8

37.71

37.88

Measurement 9

37.68

37.93

Measurement 10

37.71

37.93

Mean value [mN/m]1)

37.69

37.93

Surface tension [mN/m]2)

37.84

38.09

Mean value [mN/m]

38.0

1) Mean value of the last ten measurements

2) corrected mean value (measured value x apparatus factor = corrected value)

Conclusions:
Surface tension (at 20°C): 38.0 mN/m

The test item is considered to be surface-active.
Executive summary:

The surface tension of aqueous solutions of the test item was determined according to OECD guideline no. 115 [adopted on 27 July 1995] and EU test method A.5 [Directive 92/69/EEC, Official Journal L 383 A 1992] with the ring method.

Surface tension (at 20°C): 38.0 mN/m. The test item is considered to be surface-active.

The test(s) used to generate this report was(were) carried out in compliance with the principles of Good Laboratory Practice (GLP) in accordance with the currently valid German Chemical Substance Act (Chemikaliengesetz – ChemG), the underlying Commission Directive 2004/10/EC of 11 February 2004 and the relevant OECD decision of the council on 26 November 1997 and that the results fully reflect those found in the study. 

Description of key information

The surface tension of aqueous solutions of the test item was determined according to OECD guideline no. 115 [adopted on 27 July 1995] and EU test method A.5 [Directive 92/69/EEC, Official Journal L 383 A 1992] with the ring method.

Surface tension (at 20°C): 38.0 mN/m. The test item is considered to be surface-active.

Key value for chemical safety assessment

Surface tension:
38
in mN/m at 20°C and concentration in mg/L:
366.4

Additional information