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Physical & Chemical properties

Melting point / freezing point

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Description of key information

decomposition at 221 °C

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
221 °C

Additional information

In the Klimisch 1 non-GLP study from Kintrup (2012) the melting point of Butanedioic acid, sulfo-, 4-C12-14-alkyl esters, disodium salts was determined with the DSC method according to OECD 102 and EU method A.1. The test item did not show melting up to 221°C. Up to 221 °C the sample shows a weight loss of ca. 4-5 weight%. From 221 °C the test item shows most probably a thermal decomposition with melting (a melting > 300°C can not be excluded, due to the information of the capillary method, the decomposition products seem to start melting at temperatures > 300°C) and evaporation of the decomposition components. A vaporization of significant parts of the test item cannot be completely excluded.

For the risk assessment a melting point of 221°C will be used.

This information is considered to be relevant and reliable for the further risk assessment.