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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

In a GLP study conducted according to OECD Guideline 115, the surface tension of an aqueous solution of trisodium EDDS at a concentration of 1.01 g/L was 73.3 mN/m at 20oC  (van Helvoirt, 1993c). 

Key value for chemical safety assessment

Surface tension:
73.3
in mN/m at 20°C and concentration in mg/L:
1 010

Additional information

In a GLP study conducted according to OECD Guideline 115, the surface tension of a aqueous solution of trisodium EDDS was determined using the suspended ring method. The test material was prepared as a solution in double-distilled water (1.01 g/L) and the tensiometer used had a platinum-iridium wire ring with a radius of 9.545 mm. The mean corrected surface tension determined from five measurements was 73.3 mN/m at 20°C. Trisodium EDDS is not considered a surface-active agent based on EEC criteria (van Helvoirt, 1993c), and a similar result would expected for EDDS acid.

[Data on trisodium EDDS is considered relevant to use for understanding the potential surface tension of EDDS acid, and is acceptable for using as read-across information. On structural grounds the surface tension is not expected to differ significantly.]