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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
The high water solubility and the low values of the Henry´s constant, soil sorption coefficient all indicate that DEGDN exists predominantly in the aqueous phase of the environment.
The environmental fate of DEGDN in surface water is dominated by photolysis with surface half-lives ranging from 15 days in summer to 59 days in winter at 40°N. The environmental quantum yield is 0.18. Photolysis of DEGDN initially forms nitrate ion and 2-hydroxyethyl nitroacetate; the latter photolyzes further to 1- and 2- carbon acids and additional nitrate.
DEGDN biotransforms with a second-order rate constant of 3.9 x 10-11mL.cell-1.h-1, corresponding to a half-life of about 2 years in a typical surface water (DEGDN half-lives can be projected from this average second-order rate constant and estimates of microbial populations). Intermediate biotransformation products were observed but were further transformed and did not accumulate.
The microbial biotransformation will be a major fate process for DEGDN when it is introduced into waters with other organic waste substrates. DEGDN is expected to move readily through soils because it had low soil sorption coefficients Kp of 2 and 0.8 g/mL on EPA-5 and EPA-18 sediments, respectively.
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.
