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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 500-044-5 | CAS number: 25791-96-2 1 - 6.5 moles propoxylated
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
After 28 days 38% and 40% degradation at 10 and 20 mg/l, respectively, in a CO2 evolution test. no further biodegradation after prolongation to 40 days. Not readily biodegradable.
After 28 days 99% degradation in a Zahn-Wellens test. Inherently biodegradable.
Key value for chemical safety assessment
Additional information
Biodegradation in water was tested in two screening studies, according to OECD guideline 301 B (Ready Biodegradability, CO-evolution) and 302 B (Inherent Biodegradability, Zahn.-Wellens)
After 28 days 38% and 40% degradation was observed at 10 and 20 mg/L, respectively, in the CO2 evolution test. No further biodegradation was observed after prolongation to 40 days. Not readily biodegradable.After 28 days 99% degradation in the Zahn-Wellens test. Inherently biodegradable.
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.
