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-12- ! .~ I I Six percent s , 3% s and 1% s are also I saturated equilibrium vapour. estimated to be present. The boiling liquid can then be assumed to be a very complex system, containing molecules with between two and many thousand atoms. If one remembers that the S-S band energy levels off, at molecules with more than six atoms, one can assume that s7, s8, s9 and even s10 ~ll might exist as comparably stable rings. The bond distance and band angles in "free" sulphur chains also indicate that such molecules can exist, and it even seems that at least one new molecules (26) besides s8 and s6 has been prepared in pure form. Since UV light leads to S-S -scission (39) it can be assumed that light influences the composition and therefore the properties of liquid sulphur. Traces of impurities also influence the polym~rization propaga- tion, and alter the characteristics of the liquid drastically. Figure 2 shows, for example, the viscosity of liquid sulphur as a function of H2S impu:rities. 'v . )· . ', ·. ··': · ...0 \·. 5 24I li .. . ./ •' :-; . I ... jPDF Image | ELEMENTAL SULPHUR
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