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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 279-632-6 | CAS number: 80939-62-4
Dissociation constant
Administrative data
Link to relevant study record(s)
Description of key information
Estimated values of the representative individual constituents :
pKa 1= 1.5 - 2.0 (of phosphoric acid, ester components)
pKa 2= 10.6 - 10.8 (of amine components)
Key value for chemical safety assessment
Additional information
The test substance is a complex mixture (UVCB) of individual substances with different solubilities therefore the pKa values could not be determined experimentally.
The dissociation constant has been generated on the representative individual constituents using recommended softwares ACD/Labs and SPARC. It can be concluded that the dissociation constant of test substance referred to ACD/Labs was estimated to be as follows:
pKa1= 1.5 - 2.0 (of phosphoric acid, ester components)
pka2= 10.6 - 10.8 (of amine components)
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.
