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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: 24 June 2009 Study completion date: 28. October 2009
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Version / remarks:
Adopted: 27 July 1995
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
GLP compliance:
yes
Type of method:
plate method
Key result
Surface tension:
53.4 mN/m
Temp.:
20 °C
Conc.:
12.7 mg/L

Details on measurements:

  First run  Second run 
 Number of measurements  10 10 
 Total measuring time [min:s]  25:35 45:35 
Measuring time of the last 10 measurements [min:s] 10:29  10:29 
Measurement 1 53.42  53.16 
Measurement 2 53.45  53.28 
Measurement 3 53.50  53.40 
Measurement 4 53.52  53.35 
Measurement 5 53.57  53.38 
Measurement 6 53.60  53.33 
Measurement 7 53.57  53.23 
Measurement 8 53.60  53.11 
Measurement 9  53.69 53.23 
Measurement 10 53.72 53.18 
Mean value [mN/m] 1) 53.56  53.26 
 Surface tension [mN/m] 2) 53.56  53.26 
 Mean value [mN/m]     53.4

1) Mean value of the last ten measurements

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

Conclusions:
Surface tension (OECD 115, plate method): 53.4 mN/m at 20 °C.
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 plate method.

Surface tension (at 20°C): 53.4 mN/m. The test item is considered to be surface active.

Description of key information

Surface tension (OECD 115, plate method): 53.4 mN/m at 20 °C.

Key value for chemical safety assessment

Surface tension:
53.4
in mN/m at 20°C and concentration in mg/L:
12.7

Additional 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 plate method.

Surface tension (at 20°C): 53.4 mN/m. The test item is considered to be surface active.