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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Surface tension (1 g/L in water) is 41 mN/m at 19.3°C.

Key value for chemical safety assessment

Additional information

A guideline and GLP test is available.

The value obtained for the surface tension of n-heptanol in ultra pure water at the concentration 1 g/L is 41mN/m. It can be concluded that the test item demonstrates a capability to decrease surface tension of water which is 73mN/m at the same temperature.


The results obtained show that n-heptanol has surface-active properties.