Abstract
LIQUID sulphur is well known to become highly viscous when heated above 160° C.; this viscous sulphur (like selenium) is easily supercooled. At room temperature the product resembles unvulcanized rubber and is called ‘plastic sulphur’. This hardens at liquid air temperature to a brittle glass, vitreous sulphur. At this temperature it remains amorphous for an indefinite time; at room temperature, however, the plastic sulphur crystallizes within a few hours, the crystallization proceeding (as with selenium) from the outside to the inside. We have found that impurities and other factors have some curious effects.
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SCHENK, J., PRINS, J. Plastic Sulphur. Nature 172, 957 (1953). https://doi.org/10.1038/172957a0
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DOI: https://doi.org/10.1038/172957a0
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