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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 219-034-4 | CAS number: 2322-77-2
Endpoint summary
Administrative data
Description of key information
Additional information
The rate of hydrolysis of the substance was determined as t1/2 = <0.1 hours at pH 4, t1/2 = 8.7 hours at pH7 and t1/2 = 534 hours (22.3 days) at pH 9 in a read-across approach from a chemically related substance.
Thus in the case of the present substance, the diketo compound 18-methyl-5(10)-estren-3,17-dione should have been formed. This is consistent with the appearance of a HPLC peak with retention time ¿ 3.2 min in all hydrolyzed solutions which is increasing during hydrolysis.
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.
