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Physical & Chemical properties

Melting point / freezing point

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Description of key information

The melting point could not be determined because  PDTA-Fe(NH4)  decomposes before melting at a  temperature of 209-212°C measured with  both capilary tube and DSC.

Key value for chemical safety assessment

Additional information

With two different methods, DSC and capilary tube , the decomposition is measured.

In the first study, start of decomposition at: 212°C; in the second study, start of decomposition at: 209°C.

The slight difference in start of decomposition temperature is explained by the use of different methods.