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Physical & Chemical properties

Surface tension

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Reference
Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study without detailed documentation
Qualifier:
according to guideline
Guideline:
EU Method A.5 (Surface Tension)
Version / remarks:
The test was performed as stipulated in EC Test Procedure A.5 'Surface Tension' and DIN EN 14370 'Surface active agents - determination of surface tension'
GLP compliance:
yes (incl. QA statement)
Type of method:
ring method
Specific details on test material used for the study:
The test material was used in form of a brown-violet, crystalline solid.
Surface tension:
65.5 mN/m
Temp.:
20 °C
Conc.:
1 g/L

The concentration of the test item in water was 0.1%. Double distilled water was used for preparing the solution. The temperature of the soulution at the time of the test was 20°C. The solution was tempered over night, the preperation time for the solution was about 25 minutes. The calculation of the surface tension was done automatically under consideration of the correction of the test equipment and according to Zuidema and Walters by the measuring device.

Conclusions:
Bayscript Blaukompoente TEA-Salz shows a surface tension of 65.5 mN/m at 20°C at a concentration of 1g/l.
Executive summary:

The surface tension of Bayscript Blaukomponente TEA-Salz was investigated according to EC Test Procedure A.5 and DIN EN 14370 by the ring method. The test was performed at 20°C and a test item concentration of 1g/L in the aqueous test solution. A surface tension of 65.5 mN/m was determined (BTS 2017).

Description of key information

The surface tension of Bayscript Blaukomponente TEA-Salz was investigated according to EC Test Procedure A.5 and DIN EN 14370 by the ring method. The test was performed at 20°C and a test item concentration of 1g/L in the aqueous test solution. A surface tension of 65.5 mN/m was determined (BTS 2017).

Key value for chemical safety assessment

Surface tension:
65.5
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information