Registration Dossier

Environmental fate & pathways

Phototransformation in water

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

Phototransformation in water is no requirement under REACH.

Key value for chemical safety assessment

Additional information

Both HEDTA and its surrogate, EDTA, form complexes with ions. Therefore both exist naturally as a mixture of chelate complexes. Some EDTA species, especially the iron complex, are photolysable [EU Risk Assessment, 2004]. Metsärine et al. (2001) have shown that, in natural waters, photodegradation of Na2 -EDTA is 74% in 50 days.