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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:
Start date of the experimental work: 23 August 2018 and Completion date of the experimental work: 31 October 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 (incl. certificate)
Type of method:
ring method
Key result
Surface tension:
51.2 mN/m
Temp.:
20 °C
Conc.:
5.05 mg/L
Remarks on result:
other: mean value

Surface tension data:

 Solution Age (minutes) Surface Tension Reading (mN/m) 

    Run 1

 0  57.7
 15  55.9
 30  54.6
 60  51.7
 90  53.8
 1290  51.1
 1320  52.8
 1380  51.9
 1440  51.3
 1500  51.4
 1560  51.3
    Run 2
 0  52.4
15   53.3
 30  52.2
 60  51.3
 120  51.1
 180  51.0
 240  51.1

Results: 51.2 mN.m-1 (mean value)

Conclusions:
The surface tension was determined to be 51.2 mN.m-1 (mean value) using the ring method.
Executive summary:

The test is conducted to determine the effect of a compound, on the free surface enthalpy per unit surface area of water.

The test is conducted in accordance to EU Regulation (EC) 440/2008, Annex Part A test A.5and OECD Test Guideline 115.

The surface tension was determined to be 51.2 mN.m-1 (mean value) using the ring method therefore the test item is surface active.

Description of key information

The test is conducted in accordance to EU Regulation (EC) 440/2008, Annex Part A test A.5 and OECD Test Guideline 115.

The surface tension was determined to be 51.2 mN.m-1 (mean value) using the ring method therefore the test item is surface active.

Key value for chemical safety assessment

Surface tension:
51.2
in mN/m at 20°C and concentration in mg/L:
5.05

Additional information