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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
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EC number: 220-290-4 | CAS number: 2702-72-9
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
Additional information
According to Regulation (EC) 1907/2006, Annex VIII, Column 2, a study does not need to be conducted if the substance can be expected to have a low potential for adsorption or the substance and its relevant degradation products decompose rapidly. Sodium 2,4-dichlorophenoxyacetate (CAS No. 2702-72-9) rapidly dissociates in water into 2,4-Dichlorophenoxyacetic acid (CAS No. 94-75-7). Therefore, the evaluation of this endpoint is based on the adsorption/desorption information of this substance. As the Koc value for 2,4-Dichlorophenoxyacetic acid is 56 (European Comission, 2001), low potential for adsorption of this substance to solid particles can be assumed.
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.
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