Registration Dossier
Registration Dossier
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: 202-506-9 | CAS number: 96-45-7
Endpoint summary
Administrative data
Description of key information
Additional information
When released into terrestrial environments, volatilization of ETU from moist soil surfaces is not expected to be an important fate process given an estimated Henry's Law constant of 3.4X10-7 atm-cu m/mole, using a fragment constant estimation method. It is not readily biodegradable under aerobic conditions (0 % of biodegradation after 28 days) and is not expected to sorb significantly to soil and sediment (based upon its low log Kow value (-0.67)).Indeed, based on the fact that the substance is characterized by a low potential of adsorption, no simulation test is proposed for the soil and sediment compartments.Because of its moderate sorption affinity, ETU is expected to be mobile in soil. As a consequence, the soil and sediment compartments are not considered as the main target compartments of ETU.Last but not least, the risk assessment showed that there was no risk due to soil exposure.
A dateline on the mineralisation of organic N by soil microorganism is available in a review. However, no NOEC was mentioned. Graphically, we can estimate it to be probably between 0.1 and 10 mg/kg soil. It is not clear whether the results were expressed in kg wet soil or dry soil. The exact NOEC is also unclear as the experimental design and statistics were not presented. Therefore, this result cannot be used to derive a PNEC.
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.
