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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

pka = 13.46 - 13.74 at 20 °C (SPARC 4.6)

Key value for chemical safety assessment

Additional information

The dissociation constant of the substance Fatty acids, rape-oil, mixed esters with 1,4:3,6-dianhydro-d-glucitol, sorbitan and sorbitol (CAS 93334-10-2) was determined by QSAR calculation with SPARC (v4.6) for the 5 components (C18 mono-, di- and triester with 1,4:3,6-dianhydro-d-glucitol and C18 mono- and diester with sorbitol ) which are considered as main components of the UVCB substance. No dissociation could be determined under naturally relevant pH conditions for four components, while the component C18 FA unsatd. diester component with 1,4:3,6-dianhydro-d-glucitol has no ionizable sites in the normal pKa range