Registration Dossier
Registration Dossier
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EC number: 914-103-1 | CAS number: -
Melting point / freezing point
Administrative data
Link to relevant study record(s)
Description of key information
The reaction mass of ammonium sulphate and potassium sulfate and sodium sulphate decomposes at 260 °C.
Key value for chemical safety assessment
Additional information
The decomposition temperature of the reaction mass of ammonium sulphate and potassium sulfate and sodium sulphate was determined by thermal analysis (Müller and Gosewinkel, 2010). The result is supported by the published data of the melting point for the corresponding constituents: Several sources document the melting point of ammonium sulphate, with all determining that this substance decomposes at temperatures in the range of 235 to 280 °C. Sodium sulphate has a melting point of 884 °C (Hawley, 1981) and decomposes at a temperature of 890 °C (GESTIS, 2010), while potassium sulfate has a melting point of 1069 °C. In addition, one study has documented the melting point of the reaction mass of sodium, potassium and ammonium sulphates as 255 – 265 °C (Ajinomoto Foods Europe SAS, 2010).
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