Inhibition of Autoxidation by Di-μ-thio-dithio-bis (dialkyldithiocarbamate) Dimolybdenum

摘要: The effectiveness of molybdenum dialkyldithiocarbamates (I) and di-μ-thio-dithio-bis (dialkyldithiocarbamates) dimolybdenum (II) as antioxidants in the autoxidation squalane was investigated compared with zinc dialkyldithiocarbamate. Induction periods doped were measured using an automatic recording oxygen absorption apparatus.These compounds show efficient inhibition action give sharply defined induction periods, there being abrupt change O2 uptake rate. It has been found that potency oxidation inhibitor compound is same irrespective their degree sulfurization. seems, therefore, alkyl group play important role activity inhibition.It experimentally (I, II) act peroxide decomposer for tert-butyl hydroperoxide chroloform solution hydroperoxide. Seemingly, capacity to decompose higher than For initiated by azobisisobutyronitrile, influence on rate much more pronounced II).Therefore, it may be concluded suppress acting catalytic decomposer; other hand dialkyldithiocarbamate terminating propagation oxidative chain reaction.