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Physical & Chemical properties

Melting point / freezing point

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Description of key information

melting/decomposition: >= 208°C

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
208 °C

Additional information

In the Klimisch 1 non-GLP study from Kintrup (2012) the melting point of Aspartic acid, N-(3-carboxy-1-oxo-sulfopropyl)-N-(C16-18 (even numbered), C18 unsaturated alkyl) tetrasodium 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 208°C.Up to 208 °C the sample shows a weight loss of ca. 5-6 weight%. From 208 °C the test item shows most probably a thermal decomposition with melting (a melting > 300 °C cannot 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 208°C will be used.

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