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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:
11 December 2017 - 30 May 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Deviations:
no
GLP compliance:
yes
Type of method:
OECD harmonised ring method
Surface tension:
72.5 mN/m
Temp.:
20 °C
Conc.:
1 g/L
Remarks on result:
other: Harkins Corrected Value

Table 1: Summary of Surafce Tension Results

Time (minutes)  Surface tension (mN/m)
 Measured  Calibration corrected
 A  B  A  B
 0  72.0  72.5  72.0  73.0
 5  72.5  72.5  73.0  73.0
 10  72.5  72.5  73.0  73.0
 15  73.0  73.0  73.5  73.5
 20  73.0  73.0  73.5  73.5
 25  72.5  73.0  73.0  73.5
 30  72.5  73.0  73.0  73.5

Mean calibration corrected surface tension = 73.0 mN/m

Harkins-Jordan corrected value = 72.5 mN/m

 

Conclusions:
The surface tension of the test item was determined to be 72.5 mN/m at a concentration of 1 g/L at 20°C.
Executive summary:

The surface tension of the test item was determined in a study following OECD 115 and EC Method A.5 guidelines, using the OECD harmonised ring method. The surface tension of the test item was determined to be 72.5 mN/m at a concentration of 1 g/L at 20°C.

 

The study is a GLP-compliant, guideline experimental study and is fully acceptable for assessment of this endpoint.

Description of key information

The surface tension of the test item was determined to be 72.5 mN/m at a concentration of 1 g/L at 20°C.

Key value for chemical safety assessment

Surface tension:
72.5
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information

The surface tension of the test item was determined in a study following OECD 115 and EC Method A.5 guidelines, using the OECD harmonised ring method.

 

The study is a GLP-compliant, guideline experimental study and is fully acceptable for assessment of this endpoint.