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Physical & Chemical properties

Surface tension

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Description of key information

The surface tension of the aqueous solution at 20°C is 40.1 mN/m.

Key value for chemical safety assessment

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

Additional information

The surface tension is determined using a plate tensiometer. A commercially available tensiometer based on the plate method is used to measure the force which is required to withdraw a horizontally suspended plate from the surface of the test material or its solution in water.

Eight measurements at a temperature of 20°C were done.The surface tension of the test item, diluted to 1 g/L in water at 20°C, measured by the plate method using a tensiometer was: σ = 40.1 mN/m.

Hence, the test item has surface-active properties.