Abstract
The oxidation of thiocyanate to polythiocyanic acid by peroxydisulfate was carried out in an aqueous solution at room temperature. The primary step is the decomposition of peroxydisulfate into sulfate-free radicals. At room temperature in the presence of peroxydisulfate as a oxidizing agent, HSCN polymerizes to (HSCN)n. The oxidation of thiocyanate in an aqueous solution is often complicated, but here we obtained the polythiocyanic acid as a major product. The products were characterized by elemental analysis, IR, UV- visible, H-NMR spectroscopy, and X-ray powder diffraction.
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