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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 211-745-8 | CAS number: 693-21-0
Endpoint summary
Administrative data
Description of key information
Additional information
In general, two processes can significantly affect the fate and distribution of DEGDN in environment: microbiological transformations and photochemical transformation. Physical transport from aqueous systems is believed to be unimportant because both volatility and sediment adsorption coefficient of DEGDN are low. There is as yet no evidence for other important chemical transformation processes, such as hydrolysis or oxidation, under environmental conditions.
Hydrolysis of DEGDN was found to be extremely low under most environmental conditions. The hydrolysis was quite slow (t1/2 > 800 days) at pH 7. However, hydrolysis increased as the pH increased.
Photolysis was found to be major chemical transformation loss process for DEGDN, and half-lives ranging from 35 days in pure water to 27 days in natural water were observed. The estimated half-lives suggest that photolysis will compete with biotransformation in affecting the persistence of DEGDN in aqueous environments.
From the first-order photolysis rate constant, half-lives ranging from 15 days in the summer to 59 days in the winter were determined. The quatum yield for photolysis was measured to be 0.18. Photolytic transformation products were identified as 2 -hydroxyethylinitratoacetate, nitrate glycolic acid and formic acid.
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.
