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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:
2011
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
Surface tension:
68.5 mN/m
Temp.:
20 °C
Conc.:
90 vol%
Remarks on result:
other: mean value of 5 measurements
Conclusions:
The surface tension was determined as 68.5 mN/m by ninety percent saturation concentration of Androst-4-ene-3,17-dione in water at 20 °C.
Executive summary:

The OECD harmonized ring method was applied for the determination of the surface tension of Androst-4-ene-3,17-dione. The surface tension of a test solution at 90% of the test substance saturation solubility in water and at 20°C was 68.5 mN/m.

A test substance with a surface tension < 60 mN/m will be regarded as being a surface active material. Therefore Androst-4-ene-3,17-dione is considered not to be surface active.

Description of key information

The surface tension was determined as 68.5 mN/m by ninety percent saturation concentration of Androst-4-ene-3,17-dione in water at 20 °C.

Key value for chemical safety assessment

Surface tension:
68.5

Additional information

A test substance with a surface tension < 60 mN/m will be regarded as being a surface active material. Therefore Androst-4-ene-3,17-dione is considered not to be surface active.