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Physical & Chemical properties

Melting point / freezing point

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Description of key information

Decomposition between 270 and 445 °C

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
349.84 °C

Additional information

The Melting Point analysis was performed according to internationally accepted testing procedures, using the Differential Scanning Calorimetry method. Acid Brown 214  releases solvent between 127 and 198 °C, as shown on first endothermic peak, followed by decomposition of the product between 270 and 445 °C (onset at 292.9 °C, degradation enthalpy = 261.9 J/g).

An estimated value with Mpbpwin v.1.43* using the following smile has been reported to perform the risk assessment:

O=S(=O)(O[Na])c6ccc(/N=N/c4cc(/N=N/c1ccc(cc1)[N+]([O-])=O)c(O)c(/N=N/c3cc(cc2cc(cc(O)c23)S(=O)(=O)O[Na])S(=O)(=O)O[Na])c4O)c5ccccc56

 

* Mpbpwin is an application contained in the EpiSuite 4.1, the suite of physical/chemical property and environmental fate estimation programs developed by the EPA’s Office of Pollution Prevention Toxics and Syracuse Research Corporation (SRC).