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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Testing of the surface tesion of chlorine is technically not possible as the substance reacts with water to form sodium hypochlorite. Thus read across to sodium hypochlorite is performed. The surface tension of sodium hypochlorite (24.3 % available chlorine) was determined to be 82.4 mN/m +/-0.8 mN/m (n=3) at 20.2-20.3°C.

Key value for chemical safety assessment

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

Additional information

Read-across to sodium hypochlorite (24.3 % available chlorine):

The mean surface tension of the test item pure in demineralized water was: 82.4 +/- 0.8 mN/m (corrected value) determined with the ring method. The test item was not considered as surface-active under the experimental conditions used in this test.