Registration Dossier

Diss Factsheets

Physical & Chemical properties

Surface tension

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

The surface tension of an aqueous solution of PURASAL S was calculated with the OECD ring method. The value was higher than 60 mN/m, and hence, the test item is classified as non surface active substance.

Key value for chemical safety assessment

Surface tension:
71.8
in mN/m at 20°C and concentration in mg/L:
1 070

Additional information

The OECD ring method was used to determine the surface tension of sodium lactate. The method is based on the measurement of the force, which is necessary to exert vertically on a ring, in contact with the surface of the liquid, in order to separate it from the surface. The determination of the surface tension was carried out using a Krüss K6 Tensiometer applying the ring method. The surface tension of the aqueous solution of PURASAL S is 71.8 mN/m. As the surface tension value was higher than 60 mN/m, the test item is classified as not surface active substance.