Registration Dossier
Registration Dossier
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EC number: 937-237-2 | CAS number: 1370006-50-0
Dissociation constant
Administrative data
Link to relevant study record(s)
Description of key information
Partially unsaturated IQAC, DMS quaternised is an ionic salt and dissociates rapidly in water to form the organic quaternary imidazolium cation and the inorganic suphate anion.
Key value for chemical safety assessment
Additional information
The dissociation constant of the test substance was investigated in a study conducted according to OECD Guideline 112 (Dissociation Constants in Water) and using the titration method. In all runs not equivalence point was visible and therefore no dissociation constant could be determined. This is most probably due to the fact, that the test item shows a low water solubility of 2.6 mg/L (test concentration: 0.0025 mol/L). Adsorption effects to glass surfaces were regarded as negligible as methanol was used as solubilizer. The spectrophotometric and conductometric method also recommended in the guideline were not applicable.
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