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Physical & Chemical properties

Melting point / freezing point

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Description of key information

The melting temperature of the test substance was -38°C (235K). The atmospheric pressure was 1018 ± 3 hPa.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-38 °C

Additional information

The melting and boiling temperature of the test substance was determined using differential scanning calorimetry (DSC). This technique records the difference in heat flow to two crucibles, one filled with test substance and the other filled with an inert reference material, while these crucibles are subjected to a controlled temperature program. When the test substance undergoes a transition, such as melting or evaporation, it is indicated by a deviation from the base line of the heatflow record. Because melting and evaporation are processes in which heat is consumed, for these processes the deviation from the base line is in the endothermic direction. The melting temperature or boiling temperature (if any) of the test substance is evaluated from the DSC curve as the extrapolated onset temperature of the endothermic melting or evaporation peak. As a safety precaution for the DSC cell a preliminary test was performed using a thermogravimetric analyzer (TGA).

The experiments were performed under a flow of nitrogen and at atmospheric pressure.

The melting temperature of DIMETHYL GLUTARATE was determined using DSC. The melting temperature of the test substance was -38°C (235K). The atmospheric pressure was 1018 ± 3 hPa.