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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 260-829-0 | CAS number: 57583-35-4
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
In accordance with Column 2 of REACH Annexes VIII and IX, the adsorption/desorption screening study (section 9.3.1) and further information on adsorption/desorption (section 9.3.3), respectively, do not need to be conducted if the substance and its relevant degradation products decompose rapidly. Based on the results of the biodegradability study, the substance is considered to meet this criteria and as such the registrant proposes to omit this study. In addition the screening method cannot be conducted because the HPLC method is not technically feasible for organotin substances.
Key value for chemical safety assessment
Additional information
Organic carbon normalised adsorption/desorption coefficient (Koc) of the parent substance is 1.533E5 L/kg (corrected log Koc = 5.19) utilising software KOCWIN Version 2.0 (EPI Win 4.0) by US EPA and Syracuse Research Corporation. However, the adsorption/desorption of the parent substance may be regarded as irrelevant, as the substance rapidly decomposes upon contact with water which would occur in soil, sediments, or wastewater biosolids. The organic carbon-normalised adsorption coefficient was estimated for the expected daughter product, 2 -ethylhexylthioglycolate, using the QSAR based on first order molecular connectivity index. The estimated log Koc is 2.56 (Koc = 359.5 L/kg) for this daughter product. Thus, the relevant component/degradation product of the substance will have low affinity for adsorption to soil, sediment, and wastewater biosolids.
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.
