Registration Dossier
Registration Dossier
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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.
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EC number: 231-668-3 | CAS number: 7681-52-9
Dissociation constant
Administrative data
Link to relevant study record(s)
Description of key information
For pH between 4 and 6, all chlorine is present as hypochlorous acid HClO.
For pH inferior to 4, the main species is chlorine Cl2.
For pH higher than 5, the dissociation of the hypochlorous acid increases up to pH 9 where this dissociation is total. At pH 9, all chlorine is present as hypochlorite ion ClO-.
Key value for chemical safety assessment
Additional information
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.
