Other thiocarbamides

It was reported that it could be used to flotate ultrafine galena. Meantime, the selectivity of dithizone is better than that of xanthate in the separation flotation of Cu-Zn sulfide ore. 

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The kinetic parameters for reaction of the thiocarbamides with cumylperoxide radicals and cumyl hydroperoxide are also consistent with M-benzyl-A[ -(3-thiethanyl) thiocarbamide being faster in both oxidation chain termination (reacting with cumylperoxide radicals) and in catalytic decomposition of cumyl hydroperoxide. It was also shown that A -benzyl-V-(3-thiethanyl) thiocarbamide inhibits cumene autoxidation better than the other thiocarbamide derivatives when used in lower concentrations than the latter. 

Another method of preparation consists in heating carbon disulphide with ammonium carbonate in a sealed tube. The other product of this reaction is ammonium thiocyanate. The yield of thiocarbamide by this method is stated to be much below the theoretical value.6... 

From solubility determinations of various nonelectrolytcs, such as helium, argon, hydrogen and other gases, ethyl acetate, diacetone alcohol, phenyl thiocarbamide, phenol and aniline, in the presence of electrolytes, it has been found that log (7/70) varies approximately in a linear manner with the ionic strength of the aqueous solution, viz.,... 

The thiocarbamides with an aryl fragment at one nitrogen atom and -allylic and thietanyl fragments at the other have the highest activity with cumyl hydroperoxide, and among these compounds, A[-(o-methyl-phenyl)-A[ -allylthiocarbamide, has the highest stoichiometric coefficient (v) and markedly differs in its activity. 

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