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Physical & Chemical properties

Surface tension

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Description of key information

Method A.5 Surface tension, Council Regulation (EC) No.440/2008, Published in O.J. L 142, 2008, using the OECD harmonized ring method for the measurement (Part 1.6.4.)

Key value for chemical safety assessment

Surface tension:
47.6

Additional information

The surface tension of the test substance was measured by ring method with Surface tensiometer, type 20 (Cole Parmer).

The test substance - Tar, brown-coal, low-temp.- at apparent test concentration of 90 % of the saturation solubility of the substance in water shows corrected surface tension of 47.6 mN/m at 20°C(± 0.1 °C).

As the surface tension is lower than 60 mN/m, test substance should be regarded as a surface-active material.