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Physical & Chemical properties

Melting point / freezing point

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Description of key information

-4 °C to 76 °C

Key value for chemical safety assessment

Additional information

The melting range of the substance sulfuric acid, mono-C12-14 alkyl esters, compds. with triethanolamine (CAS 90583-18-9) was obtained as a result of the weight of evidence approach. The evidence includes guideline study (OECD Guideline 102, DSC method) with the other alkyl sulfates category member: sulfuric acid, C8-14 alkyl esters, compds. with triethanolamine (CAS 85665-45-8) as well as reliable literature data (DSC method) obtained for both dodecyl and tetradecyl sulphate, triethanolamine salt, i.e. main constituents of the substance CAS 90583-18-9. The data is consistent: it is expected that the melting of longer chain constituents (C12 and C14) can occur at somewhat higher temperatures than the melting of the substance which contains also shorter chain ones (C8 and C10). As it cannot be unambigously determined which temperature range is associated with particular constituents, the overall range from -4 °C (begin of melting of CAS 85665-45-8) to 76 °C (melting of tetradecyl sulphate, TEA salt) is given as melting range for the substance CAS 90583-18-9.