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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 939-605-8 | CAS number: 68152-93-2
Endpoint summary
Administrative data
Description of key information
Additional information
Distilled tall oil, maleated is a UVCB with varying components, but comprising maleated fatty acids and maleated rosin acids. Three extended ready biodegradation studies have been conducted using Distilled tall oil, maleated, one to OECD 301B (Roulstone, 2014) and two following OECD 301D (EcoTox, 2014). Distilled tall oil, maleated was not found to be readily biodegradable within 28 days in any of the studies. All of the ready biodegradation screens do, however, provide evidence that Distilled tall oil, maleated has the potential to degrade. About 50% degradation of Distilled tall oil, maleated was observed after 42 days in the OECD 301B (Roulstone, 2014) and up to 63 or 67% degradation was observed in the two OECD 301D studies after 60 days (Sowders, 2014a and b). In the two OECD 301D studies sufficient degradation of Distilled tall oil maleated (> 60%) is observed within the 60 day period for the test substance to be considered 'not persistent'. A further study is available for Distilled tall oil, maleated assessing degradation in seawater. In this study 32.9% degradation was demonstrated after 28 days in the study (Hamilton Garrod 1995).
No adsorption desorption studies are available for Distilled tall oil, maleated. As Distilled tall oil, maleated is a poorly soluble UVCB substance it is extremely difficult to measure a Koc value experimentally. The Koc for this substance has therefore been calculated based on a measured Kow value, following the equation in the EU Technical Guidance Document (2003) and the ECHA Guidance Document R7a (2008): log Koc = 0.81 Log Kow + 0.1.
The Koc value for Distilled tall oil, maleated was calculated to be >43651.58 (log Koc >4.64) based on a measured log Kow value of >5.6.
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.
