Registration Dossier
Registration Dossier
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EC number: 943-428-1 | CAS number: -
Dissociation constant
Administrative data
Link to relevant study record(s)
Description of key information
pKa=13.92 for C18 sorbitan triester component
pka=13.05 for C18 sorbitol diester component
Key value for chemical safety assessment
Additional information
The dissociation constant of the substance Sorbitan C16-18 (even numbered) fatty acid esters, ethoxylated (1 - 6.5 moles ethoxylated)
was determined by QSAR calculation with SPARC (v4.6) for the single components. There is no dissociation in the environmental relevant pH range between 5 and 9, however for two out of four components tested, the values pKa > 13 were obtained. For two other components: C16 sorbitan monoester and C18 dianhydroglucitol diester, no dissociating properties were determined.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.
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