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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 219-348-1 | CAS number: 2421-28-5
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
In the key study entitled “Statement on 3,3’,4,4’-Benzophenonetetracarboxylic dianhydride: Hydrolysis as a Function of pH: according to OECD Guideline No. 111 (2004) and Council Regulation (EC) No. 440/2008, Method C.7” performed at DR.U.NOACK-LABORATORIEN Sarstedt, Germany in 2012, a hydrolytic half life, at ambient temperature, of less than 10 minutes was assumed based on the data obtained during a preliminary study.
Key value for chemical safety assessment
- Half-life for hydrolysis:
- 10 min
- at the temperature of:
- 40 °C
Additional information
In the preliminary test a solution with a concentration of 10 mg/L of the substance was prepared in HPLC-water and immediately injected 10 times into the analytical system. Due to the fast transformation only the transformation product 3,3,4,4 -Benzophenonetetracarboxylic acid (BTCA) could be detected. After 9 minutes (sample preparation, including chromatographic separation) a transformation rate of already 100% was determined on basis of the BTCA measurements. Due to the fast transformation, no hydroloysis testing on basis of the OECD 111 guideline could be performed. A hydrolytic half life of less than 10 minutes could be assumed at environmentally relevant temperatures.
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.
