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Physical & Chemical properties

Surface tension

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Link to relevant study record(s)

Reference
Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
18 March 2019 to 18 April 2019
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)
Qualifier:
according to guideline
Guideline:
EU Method A.5 (Surface Tension)
GLP compliance:
yes
Type of method:
OECD harmonised ring method
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Lot/batch No.of test material: E01255-297
- Expiration date of the lot/batch: 31 December 2022
Key result
Surface tension:
>= 42.67 - <= 58.59 mN/m
Temp.:
20 °C
Conc.:
90 vol%
Conclusions:
The OECD harmonized ring method was applied for the determination of the surface tension of the test item. Both the Du Noüy ring method and the Lamella Tear-off method were applied.

The surface tension of a test solution at 90 % changed with time. Because an accurate value could not be obtained, the surface tension was reported as a range of the lowest and highest surface tension value measured. The surface tension of the test item solubility in water and at 20 °C was 42.67 – 58.59 mN/m. Though no accurate value could be obtained, it is safely concluded that the test item has to be considered surface active.
Executive summary:

The study was performed based on procedures in the OECD Guideline 115 (Surface Tension of Aqueous Solutions) and EU Method A.5 (Surface Tension). The OECD harmonized ring method was applied for the determination of the surface tension of the test item. Both the Du Noüy ring method and the Lamella Tear-off method were applied. The surface tension of a test solution at 90 % changed with time. Because an accurate value could not be obtained, the surface tension was reported as a range of the lowest and highest surface tension value measured. The surface tension of the test item solubility in water and at 20 °C was 42.67 – 58.59 mN/m. Though no accurate value could be obtained, it is safely concluded that the test item has to be considered surface active.

Description of key information

The study was performed based on procedures in the OECD Guideline 115 (Surface Tension of Aqueous Solutions) and EU Method A.5 (Surface Tension). The OECD harmonized ring method was applied for the determination of the surface tension of the test item. Both the Du Noüy ring method and the Lamella Tear-off method were applied. The surface tension of a test solution at 90 % changed with time. Because an accurate value could not be obtained, the surface tension was reported as a range of the lowest and highest surface tension value measured. The surface tension of the test item solubility in water and at 20 °C was 42.67 – 58.59 mN/m. Though no accurate value could be obtained, it is safely concluded that the test item has to be considered surface active.

Key value for chemical safety assessment

Surface tension:
42.67

Additional information