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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 244-169-0 | CAS number: 21049-70-7
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Rapidly biodegradable
Key value for chemical safety assessment
Additional information
2-(methylamino)ethanol, compound with sulphur dioxide is soluble in water and dissociates to 2 -(methylamino)ethanol and sulphite ions. Since no studies on the ready biodegradability of the substance are available, the biodegradability assessment has been performed with the substance’s dissociation products. For this purpose, 2 -methylaminoethanol and sodium sulphite have been consulted for the evaluation on a read-across approach.
There are two studies available in which the biodegradability of 2-methylaminoethanol (CAS 109-83-1) has been assessed according to OECD guidelines 301 A (selected as key study; BASF AG, 1993) and 301 C (MITI, 1992), respectively. Both studies concluded at test termination after 21 and 28 days, respectively, that the substance is readily biodegradable (92 - 93 % DOC removal; 68 % O2 consumption).
A ready biodegradation study does not need to be conducted with sodium sulphite since the substance is inorganic (Annex VII, REACH). In addition, many bacterial species are known to oxidize sulfur compounds. Prokaryotes oxidize hydrogen sulfide, sulfur, sulfite, thiosulfate, and various polythionates under alkaline, neutral, or acidic conditions (Friedrich et al., 2001; Dahl, 2000). Reaction rates however for environmental compartments or elimination rates for biological treatment plants are not reported.
Nevertheless, it can be concluded that the substance is expected to be rapidly 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.
