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Physical & Chemical properties

Melting point / freezing point

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Description of key information

 In a duplicate experiment it was determined that the test substance has no defined freezing temperature or freezing range.

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Additional information

The determination of the freezing temperature of 1-ETHYL-3-METHYL IMIDAZOLIUMETHYLSULFATE was performed in accordance with EEC-Directive 92/69 EEC, A.1 "Melting/Freezing temperature (1992) and on OECD Guideline no. 102 "Melting Point/Melting Range" (1981). A liquid bath containing dry ice in acetone was used. In a duplicate experiment it was determined that the test substance has no defined freezing temperature or freezing range. The viscosity increased with decreasing temperature without showing a clear phase transition of the liquid into the solid state. The test substance could not be moved anymore at a temperature of about -55 / -53 °C (218 / 220 K).