Registration Dossier
Registration Dossier
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EC number: 601-601-6 | CAS number: 119345-04-9
Dissociation constant
Administrative data
Link to relevant study record(s)
Description of key information
Waived: Testing is scientifically not justified
Key value for chemical safety assessment
Additional information
The estimated (apparent) pKa values for the mono- and di- alkylated species of the diphenyl oxide mono- and di-sulfonate range from -0.91 to -0.24 at 25 °C and zero ionic strength. It can be assumed that the substance will occur in a fully ionized (dissociated) state at any pH which occurs physiologically or in the environment. Precise measurement of pKa is therefore not necessary.
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