4,4-dimethyl-3,5,8-trioxabicyclo[5.1.0]octane

Surface tension

Link to relevant study record(s)

Reference

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Study period:

27 Sep 1995

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:

92/69/EEC

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

ring method

Key result

Surface tension:

67.76 mN/m

Temp.:

20 °C

Conc.:

1 g/L

Validity criteria for the measurement of the surface tension:

Target condition according to guideline 92/69/EWG A.5:	Actual condition according to the study:	Validity criteria met:
A solution of the substance is prepared in distilled water. The concentration of this solution should be 90 % of the saturation solubility of the substance in water; when this concentration exceeds 1 g/ L, a concentration of 1 g/ L is used for testing.	The water solubility of the test substance was determined to be <1000 g/L in another test (see "Water solubility"). Thus, a concentration of 1 g/L was used for testing.	Yes
The measurement shall be made at approximately 20 °C and shall be controlled to within ± 0.5 °C.	Within the study the temperature was kept at 20.0±0.5°C using an ultrathermostat temperature.	Yes
The measurement results: individual readings, their arithmetic mean and the corrected mean; concentration of the solution should be stated.	The raw data, mean values and concentrations of the test solutions were stated in the study.	Yes

 

Conclusions:

The surface tension of the test substance was determined to be 67.76 mN/m at 20°C.

Executive summary:

The study was performed to determine the surface tension of the test substance by a ring tensiometer at 20°C in accordance with EC Testing Guideline A.5. The solubility of test substance was determined to be higher as 1 g/L (S>1000 g/I). Therefore, the surface tension of an aqueous solution containing 1 g/I of the test substance was measured. The surface tension of the test substance was determined to be 67.76 mN/m (standard deviation +/-0.05) at 20°C. No time dependence of the surface tension of the test solution was, measured. Therefore, the test substance is not considered to be surface active.

Description of key information

A study was performed to determine the surface tension of the test substance by a ring tensiometer at 20°C in accordance with EC Testing Guideline A.5. The solubility of test substance was determined to be higher as 1 g/L (S>1000 g/I). Therefore, the surface tension of an aqueous solution containing 1 g/I of the test substance was measured. The surface tension of the test substance was determined to be 67.76 mN/m (standard deviation +/-0.05) at 20°C. No time dependence of the surface tension of the test solution was, measured. Therefore, the test substance is not considered to be surface active.

Key value for chemical safety assessment

Surface tension:

67.76

in mN/m at 20°C and concentration in mg/L:

1 000