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Physical & Chemical properties

Surface tension

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Description of key information

Based on the molecular structure this endpoint can be waived. No hydrofobic tail is present. Moreover, measurement of the surface tension of an aqueous solution of  PDTA-Fe(NH4) at a concentration of 1 g/L and at a temperature of 20 degrees C showed a value of 73.2 mN/m. This is nearly the same surface tension as water, viz. 72.3 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

No surface active properties are expected, because of the absence of a hydrophobic tail in the structure.