Registration Dossier

Diss Factsheets

Administrative data

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

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2006
Report date:
2006

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Qualifier:
according to guideline
Guideline:
EU Method A.5 (Surface Tension)
GLP compliance:
yes
Type of method:
OECD harmonised ring method

Test material

Reference
Name:
Unnamed
Test material form:
liquid
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Purity : 96.7% w/w

Results and discussion

Surface tensionopen allclose all
Surface tension:
48.1 mN/m
Temp.:
20 °C
Remarks on result:
other: without dilution
Surface tension:
33.4 mN/m
Temp.:
40 °C
Remarks on result:
other: without dilution
Key result
Surface tension:
31.6 mN/m
Temp.:
20 °C
Remarks on result:
other: 90% aqueous saturated solution

Any other information on results incl. tables

After zero point adjustment, the surface tension of the ethanol was determined at 20°C (+/- 0.5°C) and 40°C (+/- 0.5°C); from the data obtained, the calibration factor were calculated to be 0.9697 at 20°C and 0.9585 at 40°C.

After zero point adjustment, the surface tension of the water was determined at 20°C (+/- 0.5°C) and 40°C (+/- 0.5°C);  the calibration factor was calculated to be f = 0.9993.

The test article was tested without dilution at 20°C (+/- 0.5°C) and at 40°C (+/- 0.5°C) and as an aqueous solution at 20°C (+/- 0.5°C) at 90% of the saturation point.

Six measurements were performed for each sample at 20°C and 40°C.

Applicant's summary and conclusion

Conclusions:
From the experimental data obtained, it can be concluded that the surface tension of the test item is 48.1 mN/m at 20°C and 33.4 mN/m at 40°C and 31.6 mN/m at 20°C for the 90% aqueous satured solution.
According to the data obtained for the 90% saturated aqueous solution, the sample should be regarded as a surface-active material.

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