1,1'-(methylenedi-4,1-phenylene)bis(3-butylurea)

Surface tension

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

surface tension

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

the study does not need to be conducted because water solubility is below 1 mg/L at 20°C

Reference 2

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

supporting study

Study period:

1993-07-09 to 1994-10-13

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.5 (Surface Tension)

Version / remarks:

EEC 92/69

Deviations:

no

Qualifier:

according to guideline

Guideline:

OECD Guideline 115 (Surface Tension of Aqueous Solutions)

Version / remarks:

1981

Deviations:

no

GLP compliance:

yes

Type of method:

ring method

Specific details on test material used for the study:

Analytical purity: >= 99.65 %
Lot/batch No.: 93.166

Key result

Temp.:

20 °C

Conc.:

0.005 mg/L

Remarks on result:

not determinable because of methodological limitations

Water solubility of the test article was determined as lower than 0.24 mg/L (test A 6). Therefore, in agreement with EEC Directive 92/69, surface tension of aqueous solution of the test article was not determined as substances with a water solubility lower than 1 mg/L need not to be tested.

Conclusions:

Water solubility of the test article was determined as lower than 0.24 mg/L (test A 6). Therefore, in agreement with EEC Directive 92/69, surface tension of aqueous solution of the test article was not determined as substances with a water solubility lower than 1 mg/L need not to be tested.

Executive summary:

The surface tension is defined as the free enthalpy of the surface per unit area of surface. The surface tension is measured at the surface of a solution of the test article in water. The knowledge of the water solubility of the test article is a prerequisite to the performance of this test.

Water solubility of the test article was determined as lower than 0.24 mg/L (EU-Method A 6). Therefore, in agreement with EEC Directive 92/69, surface tension of aqueous solution of the test article was not determined as substances with a water solubility lower than 1 mg/L need not to be tested.

Description of key information

Water solubility of the test article was determined as lower than 0.24 mg/L (EU-Method A.6, Water solubility). Therefore, in agreement with EEC Directive 92/69, surface tension of aqueous solutions of the test article was not determined, as substances with a water solubility below 1 mg/L do not need to be tested.