Registration Dossier

Environmental fate & pathways

Biodegradation in water and sediment: simulation tests

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

The biodegradation of trisodium EDDS was assessed in an activated sludge simulation test (DOC removal) conducted according to OECD Guideline 303 A and in compliance with GLP. The mean DOC removal value, based on 17 measurements taken between days 8-30 (with one result excluded) was 95.6% (SD 3.3%). Therefore, trisodium EDDS was shown to be readily biodegradable (Geukens, 1993b; Schowanek et al. 1997). 

Key value for chemical safety assessment

Additional information

The biodegradation of trisodium EDDS was assessed in an activated sludge simulation test (DOC removal) conducted according to OECD Guideline 303 A and in compliance with GLP. The mean DOC removal value, based on 17 measurements taken between days 8-30 (with one result excluded) was 95.6% (SD 3.3%). Therefore, trisodium EDDS was shown to be readily biodegradable (Geukens, 1993b; Schowanek et al. 1997).

[Data on trisodium EDDS is considered relevant to use for understanding the potential biodegradability of EDDS acid, and is acceptable for using as read-across information].