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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Surface tension

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Description of key information

The surface tension of Olaflur at 20 °C was determined to be 43.6 mN*m-1 using a concentration of 1 g/L. Consequently, Olaflur is considered as surface-active substance.

Key value for chemical safety assessment

Surface tension:
43.6
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information

The methods are based on the measurement of the force which is necessary to exert vertically on a stirrup or ring, in contact with the surface of the liquid, in order to separate it from the surface, or on a plate, with an edge in contact with the surface, in order to draw up the film that has formed. A solution of the substance was prepared in distilled water. A concentration of 1g/L was used. The surface tension at 20 °C was determined to be 43.6 mN*m-1. According to EU method A.5 for the determination of the surface tension, substances showing a surface tension lower than 60 mN/m under the conditions of this method should be regarded as surface-active materials.