Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 200-652-8 | CAS number: 67-43-6
Sediment toxicity
Administrative data
Link to relevant study record(s)
Description of key information
No sediment toxicity studies were available for DTPA acid. However, based on a log Kow <3 and low predicted adsorption and binding of DTPA, sediment testing is not necessary.
Key value for chemical safety assessment
Additional information
In a laboratory test, solutions of H4EDTA and ZnEDTA were eluted through various surface soils and were found to move quite readily through the soils and be only very slightly adsorbed (Cheng et al., 1972). A model calculation of the distribution of EDTA metal complexes between water and suspended solids resulted in a finding that <1% of the total EDTA is adsorbed, and according to the fugacity model Mackay level I, the preferred environmental component for EDTA is the hydrosphere (99.999%) (EU, 2004). Thus, based on a read across approach from EDTA, low adsorption is predicted for DTPA, and sediment testing is therefore not necessary for DTPA.
Cheng SM, Thomas RL, Elrick DE. 1972. Reactions and movements of EDTA and ZNEDTA in soils. Can. J. Soil. Sci. 52:337 -341.
European Union (EU). 2004. European Union Risk Assessment Report: edetic acid (EDTA)
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
