Specimen preparation method iodine

The electrical conductivity of molten sulphur at temperatures up to 200 C has been studied on samples which were specially purified, as well as doped with impurities (paraffin, phenanthrene, benzidine, bromine, and iodine). The current flow below 160 C results from electrophoretically migrating impurities and, by interaction with the impurities, ionized molecules, whereas at higher temperatures conduction is caused by electrons. At the minimum of viscosity of the molten sulphur (154.5 °C) the conductivity shows a maximum, which is shifted by impurities (especially halogens) as much as 10 °C towards lower temperatures, llie effect on the mechanical properties of sulphur by the presence of has been studied. The preparation (3 methods), identification, and testing of are reported. Specimens with an content of more than 16% may be prepared by pouring hot sulphur into cold CSg. An analysis of the results of the study indicates that acts as a typical low-modulus material,... 

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