N,N-bis(2,3-epoxypropyl)aniline

Surface tension

Link to relevant study record(s)

Reference

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 115 (Surface Tension of Aqueous Solutions)

GLP compliance:

yes

Type of method:

OECD harmonised ring method

Key result

Surface tension:

57.6 mN/m

Temp.:

20.8 °C

Conc.:

1 g/L

Conclusions:

The mean surface tension of test item in water has been determined to be 57.6 mN/m at 20.8 ± 0.5 °C. The test item was considered to be surface-active.

Executive summary:

It was observed that sample solutions 1 and 2 contained no excess test item, but were cloudy with a Tyndall beam effect observed.  Following completion of determinations 1 and 2, the test was repeated with the additional procedural step of filtration to provide a clear solution with no Tyndall beam.  No significant difference in the surface tension was observed, thus the all results have been reported with the mean result taken from all four determinations.

The torsion balance was checked for accuracy using a 0.500 g certified weight.  

According to criteria mentioned in EC Method A.5, substances showing a surface tension lower than 60 mN/m under the conditions of this method should be regarded as being surface-active.

Description of key information

The mean surface tension of test item in water has been determined to be 57.6 mN/m at 20.8 ± 0.5 °C.  The test item was considered to be surface-active.

Key value for chemical safety assessment

Surface tension:

57.6