Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.

Diss Factsheets

Physical & Chemical properties

Dissociation constant

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Administrative data

Link to relevant study record(s)

Description of key information

pKb=11.73 (calculated from the pKa-value of hypophosphorous Acid : pKb = 14 -pKa)

Key value for chemical safety assessment

Additional information

From expert statement, the pKb of the substance is calculated from the pKa of hypophosphorous acid determined in a study according to guideline OECD 112 and GLP standard.

As the expert statement is well described, the study is considered as reliable without restrictions.